Can you reserve a rollaway bed before you cruise?  I'm thinking we will need one.

Does the arcade spec. Sensation take bills/coins?

Does the casino take bills/coins?

Thanks in advance

The casino will take money, period. You may get a strange look if you walk up with a bunch of rolled pennies, but they'll take it.

The casinos will take anything you give them.  You can use your S&S card in the machine though. 

Not sure if you can reserve a roll away in advance BUT be sure to call and make sure your ship has roll aways.  Some of the newer ships don't have them. 

Call Guest Relations - 800.929.6400

We went on the Elation in 2006 and because our room only had 3 beds and we had 4 people to our room, they already had a roll away in there.

The arcade I went to (Valor) had a machine to change bills or coins into tokens.  I was really unhappy with the machines though, 3 out of the four did not work and I had to ask about 7 Carnival employees before I finally got my tokens back.