Normally when in the Cansino I start off with $200, and normally I go back and forth winning and losing without having to put any more money in. (slots only). Then within the 3rd or so day I usually hit a average win of $500 to $1,000, I then cash out and put that money up with the exception of $200 and I start the process over again, but once that $200 out of my hit is gone, I'm done!!! I always go home with more than I started with, sometime with more than my cruise fare was, (casino offers).
So, while I am not a big gambler and I have had all sorts of casino offers from free room, free drinks, and OBC, the best offer I took was a free room with $250 OBC and all I had to pay was taxes and port fees, so with the OBC that cruise was free. You do not have to spend big bucks in the casino to get these offers, I'm proof of that.