I got on the 3:30 last year with my brothers and we all got our bikes on without reservations. Nobody said anything either. I'm not sure that they're as hot on it as they say they're going to be.
I got paranoid and called up to reserve a place and was told that I couldn't do it until around mid May.
I am indeed doing it, thought I might treat myself to gears this year too!
I got on the 3:30 last year with my brothers and we all got our bikes on without reservations. Nobody said anything either. I'm not sure that they're as hot on it as they say they're going to be.