Sims Daytime Naps & Coffee Use Sleep vs Nap in Clubs
Sims can only take naps from 06h00 to 19h00, and they can use the coffee maker and the tea maker from 06h00 to 17h00. Therefore, if they feel tired at night, they will go straight to the bed.
Additionaly, for Get Together users, sleep and nap are separated into different club activities.