Being a hostess and an introvert at the same time?

I just got a job at Texas Roadhouse, as a hostess, and am in high school full-time, taking all college classes. I've had training all week from 3-9:30, and have had an exorbitant amount if pressure between school and learning all the different hostess positions, restaurant layout, the entire menu (including the combos, what goes with what, and ounces if every meat product we serve) line dances, and table numbers. I feel as though I have NOTHING together and can't remember anything, which is a problem, since we open Saturday. I'm also very uncomfortable with my position, since I have to tell every single guest about our "story," set their table, and communicate with the updaters all at the same time. We're going to be extremely busy, and they haven't even told us our schedules yet. If I knew I was going to have to do 5 different positions as a hostess and have the hardest job in the restaurant, instead of the other way around, I would NOT have taken it. We only get paid $7.50 an hour and don't get to keep our tips, as well. Does anyone have any advice with this?
Being a hostess and an introvert at the same time?
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