Hello!
I had talked to someone earlier this month about what to eat at Passover. Hope you don't mind, but here is the link:

http://forum.lowcarber.org/showthre...&threadid=37466

The best I can suggest for you is to bring your own additions and to eat around the carbs, i.e. eat the broth of the soup, not the matzah balls.
Ceremony is special, though, so don't miss out. Just be aware and stay in control. Good luck!