I would also say that you don’t need a car while in training unless you can drive home. If you want to stay in the hotel during your off days and take a trip you can better share a rental car with your classmates.
I would also second the idea to stay in the same hotel as your sim partner.
To add a different perspective- I never met with my sim partner to prepare for a session or sit in the paper tiger. We just met for the occasional dinner. Nevertheless we got excellent grades for our good CRM. But we both were very experienced in Boeing aircraft though it was a new type for both of us. So everyone is different in how they prepare.