Things To Do On The Gauntlet Runner In Metaphor: ReFantazio

Spend Time With Party Members

Depending on the party member, a different Royal Virtue will increase. There will also be a dialogue option that can reward MAG depending on which one you choose.

Follower Rank Up

Some party members have ranks that can be done on the Gauntlet Runner while it's moving, though these are few and far between.

Use The Toilet (Does Not Pass Time)

Using the toilet on any day that ends with a 5 will increase your Luck by 1.

Check The Pantry (Does Not Pass Time)

Two ingredients can be found daily in the pantry that can be used for cooking.

Use The Washroom (Does Not Pass Time)

This can be done daily to give the Protagonist 100 EXP.

Go To Bed

Advances time to night without doing anything, but increases the odds of a monster attack.

Gardening

The Plant Culture Chamber can grow a plant in a single day after seeds are planted. Planting takes time while harvesting does not.

Read A Book

Different books will be added as you progress the main story and will increase a different Royal Virtue.

Cooking

Use ingredients to make a healing item. The Speed Cooking skill can be unlocked through Maria's follower rewards to make cooking not take up time.

Fishing

Use bait to catch fish that can be used in cooking.

Clean The Gauntlet Runner

In the engine room is the Upright Cleaning Tool, which can be used to clean and increase the Protagonist's base HP.

Washing Machine

Doing laundry will increase your maximum MP, while also sometimes giving a small sum of Reeve.

Spend Time With Party Members

Each party member can increase two Royal Virtues, with the second option usually appearing more often during the night.

Bath Cask

Permanent stat increases for the Protagonist depending on the Bath Salt you use.