Do you get $1 chips for a 3/6 game at a casino?

[celiboy]

I'm looking to hit up a casino for some 3/6. Do they just give you a whole bunch of $1 chips, or is it a mix of $2, $5 etc. If it's a mix what kind of mix of different chips should I get? Also, I'm assuming a 30BB buy in or $180-$200 is standard in this kinda game? Should I take the chips out of the rack or leave them in there? I was watching limit on Live at the Bike and it seemed like most players just left the chips in the rack.