At Wally's (garage one), I recently made the online reservation on a whim (I usually don't) before showing up. When I got there, the lady said she'd had to turn me away unless I had a reservation. Apparently they were full. Think that was the first time I was told it was full. Luckily I made the reservation. Their whole reservation process seems overly simple and sketchy to me. Do you guys know if the reservation absolutely guarantees you get to park there, or has anyone ever been turned away from Wally's premier garage even with a reservation?