Animal Crossing is real time vs Stardew Valley which you can play as much as you want to make progress
Other than the very start the general Animal Crossing loop is designed so you play in short bursts daily. You can’t marathon it like Stardew Valley. Stores open and close at specific times in the day as do certain events.
Though the social aspect makes it sound like longer play times are more viable than ever though not for the core loop.
To be honest it sounds like the perfect game in this social climate as a result of maintaining a routine and schedule at times like this, as it gives you something to look forward to and your day a structure… oddly. You can grind bells for as long as you want though but it wont speed up your progress.