If you're shore diving Buddy's has the drive-thru tank pickup. I think you can also stay at Caribbean Club or BelMar in Belnem and use it since their dive operations are affiliated. All three are linked on the main Buddy's website.
For shore diving at other sites - at Capt' Don's does anyone know if you have to carry tanks up the ramp from the locker area? That might get old fast.
Tank storage is at the same level as the parking lot. Short term parking is available for gear pickup. You do have to carry tanks down to the dock.