get there early. really... cant you get a bit organised? get there at the same time?
Hmm. This isnt a promise, and you mght want to wait for someone like zardoz to reply.
what happened last time, was that until a certain time, you could reserve seats by putting the chairs on the table. but it only lasted until a certain time. im not 100% if that will happen this time, because its going to be OMG MEGA BUSY.
what you want to do, is get there as close to 10am as possible, and if someone is running late, talk to the check in people

edit for obviousness
I MAKE NO PROMISES. GET THERE AT 10 TO BE SURE.(to be shure to be shure to be shure *chuckle*)