Like the subject title says I've lost my licence for 3 months and have to keep my ralliart car parked for 3 months without driving...It sucks but i know i deserve it (the suspension)

Just had it serviced oil change/oil filter change by mitsu before I had to park it away.
I just wanted to ask you guys, if there is anything I need to do to my car on a regular basis while it is parked to keep it 'maintaned' or operational ?
The service guy just said, leave it on for about 1/2 hour once a week in its stationary position and that should be enough- so the battery dosn't run flat.
Do you guys recommend doing anything else or is what the service guy recommened enough?
Cheers,