Do they charge an incidental fee? & can I pay in cash?

If you pay in cash there is a $100 incidental hold until you checkout

If you make a long distant call or order a movie etc it will be added to your bill@checkout. There are no upfront fees. The staff are extremely pleasant & knowledgeable you can always call or ask them when you check in.

I think you can. Ask the front desk first. They will help you.