Most likely you will.
You do have 2 prep issues.
1. A self administered enema 60 minutes before treatment.
2. Then drinking a bottle of water about 20 min before tmt.
Empty colon and full bladder.

My experience was with Proton treatment 5 doses over 8 days.
Stayed by the hospital during the week and drove home - 2 hrs- for the weekend.
No issues with driving