Reading some of the sleeping at the airport sites - I think I'd spend $60 on a cheap motel with a free shuttle with hotwire - I see someone suggested La Quinta -with free shuttle , free breakfast the total cost isn't likely to be much more than sleeping on the floor and paying airport prices for food and drink. I've stayed at La Quintas - it's a very acceptable budget brand.

Whilst some airports are quite user friendly for overnight sleeping MCO doesn't appear to be one of them.