First Live game in a Casino - Your thoughts?

Next week I am going to my local casino for the first time and taking part in the $20+2 "beginners" NLHE tournament there. There are unlimited rebuys for the first 90 minutes. I have absolutely no idea how popular this place is or how many people will be there.

I've read a fair bit about how live game play is different from online but I would like to gather some of your thoughts, tips and advice before I plunge into the unknown.

Thanks in advance.

Bring $100. These unlimited rebuy tournament are crazy during the rebuy phase. You see alot of chasing and people just trying to double up or rebuy right away. You want to take some buffer money incase someone chases and catches against you so you can rebuy if you like.