Just a quick overview on what the time-gated events this game has, and that you can bypass them by changing your system clock. There might be risks that you weren't aware of, so read through the guide first before trying!

You can also abuse the Cross-Save feature for the in-game gacha system. There is thankfully no microtransaction, but the favorable outcome feels so ridiculously unlikely, that I cannot in good faith recommend anyone trying to get all the lootbox recipes legitimately, for instance.

• Time-travel to make getting daily things faster (e.g. Islander Recipes, Celestia's Gift)
  
  • Only travel backward to avoid messing up Ginormosia merchants & veggie stalls
• Save manually with Cross-Save to save-scum the gacha/aging results

Changing your system's clock (commonly known as "time-traveling") is a method used to faciliated certain video game mechanics that operate based on real-life time. Several mechanics in Fantasy Life i keeps track of that:

• (daily) Celestia's Gift at Base Camp
  
• (daily) Islanders' free gift, emote, and recipe
  
• (hourly) Gallery update (for rating & selling)
  
• (hourly) Current items sold by Traveling Merchants in Ginormosia
  
• (half-hourly) Veggie sold status in Ginormosia

Say you want to quickly obtain all the islander recipes, which only one is obtainable per real-life day, you can change your system time to a different day and obtain another one immediately.
(see guide linked at the bottom on how to obtain islander recipes)

There have been reports where traveling forward in time would mess up the Traveling Merchants and veggie stalls in Ginormosia. For example, if you travel 2 years ahead and back, your Ginormosia merchants and veggie stalls would stop updating normally until you play for 2 years again.

As such, it is recommended to time-travel only backward instead of forward.

1. Return to the current date
   
2. Host a multiplayer session
   
3. Enter Ginormosia
   
4. End session, that's it!

Unfortunately, I am not sure if a fix has been found yet, so please LMK if anyone has found a working method.

So yeah, traveling forward can severely handicapped your cashnut income. If you are in need of cashnuts, my advice is to stock up on as many Shadow Carrots as possible first, and then travel to whichever date you can sell them. From there, you can keep selling them repeatedly by skipping forward a few hours at a time.

Fantasy Life i auto-saves your progress, sometimes too often to a fault. Usually, you can manully save right before some important actions, such as crafting a high-tier weapon and challenging a Golden Crown boss, and reload to attempt again.

Basically the game auto-saves when:

• A different area is loaded (i.e. screen-transition)
  
• A Treasure Grove sapling is replanted
  
• An equipment buried in an Aging Altar is retrieved
  
• Mysterious Slates are given to Edward
  
• Marco's loot boxes are purchased

There is no way to disable auto-save as far as I know, meaning the game probably expects you to take what you're given from the lottery.

However! The game has a Cross-Save feature that is intended for transferring save data between different systems, meaning it can act as a manual save to redo the lottery if you want a different outcome.

1. Go through the setup to enable Cross-Save
   
2. When manually saving your game, toggle the "Update Cross-Save data as well" option
   
3. GAMBLE
   
4. If the outcome is unfavorable, exit to the title screen
   
5. Choose "Cross-Save Inspection"
   
6. Press "Yes" to overwrite local save data
   
7. Return to step 3 to try again until you're done!

Read more about the Cross-Save here:
https://www.fantasylife.jp/fli/en/guide/cross-save/

Alternatively, you can save-scum without setting up and going through the Cross-Save process, but it's only available on PC.

1. Locate where your save data is stored
   Path: /Program Files (x86)/Steam/UserData/<Steam ID>/2993780/Remote/
   File: 002DAE74-00-gamedata.bin
   
2. Right-click the file, then on "Properties"
   
3. There should be a checkmark to make the file read-only
   
4. Upon toggled, the game would be unable to overwrite save data
   
5. Do the activity, e.g. gambling opening gacha boxes
   
6. Reload if you don't find what you're looking for
   
7. When you do, go back to the file properties and uncheck read-only mode
   
8. Try saving the game

Just to be safe, you can test the method by teleporting to a random location (e.g. the Depths) for Step 5 instead. If you manage to load the file without the teleportation being saved, you should be good to go with this method!

I have put together various other tips & tricks in this separate guide and the Compendium spreadsheet as well. You may find more useful information there, check it out!
Google Sheet[docs.google.com] | HTML View Mode[docs.google.com]
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=3484233912
I have jotted down various Life-related tips, which you can see in this guide:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=3500367872
Quite a number of recipes are obtainable only from Islanders. See this guide for details:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=3493902047
This guide contains a quick summary on obtaining all achievements:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=3505903847
This guide contains a quick reference for various not-easily-obtainable items:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=3507324813