To be honest, at that time and location, chances are you won't automatically get a good cheap price of a hotel to stay at. There are some nice ones, but they aren't all that cheap. However, I do suggest checking out deals online. At priceline, you can name your own price for hotels and see if you can get a good deal that way. You do need a credit card to purchase these hotels, so if you don't have one yourself, you may want to ask if you can use someone else's. As long as you give them money towards it.
But they have like Holiday Inn, Quality Inn, Comfort Inn, Park Place Hotel, etc. down there.
As far as summer jobs, most likely what you'll be able to get is like fast food at your age. Or babysitting or something like that. There isn't too much for 16 year olds.