9am should be good and not too crowded.
from past experience in that area, some of the bigger teams have gone out and marked pit areas the night before in the main area. But even so, there will be more than enough space to set up a pit - at 9 it will be mainly bike guys setting up, BFG, and some of the big teams.
thats pretty much what i have figured. Hell last year when comeing back from the CODE race I ahd lost my wallet with my ID. I only had a birth certificate left. Tehy asked my buddy how long he had known me and what my dads name was then sent us on our way. Its pretty easy to tell I am american. I told the guy I will tell him my address, bank acount number, and the mayor of my city...LOL ...if that didnt work I was running and getting arrested, no way am I staying in mexico!