Electrical?

Most installations require electrical power for fridges, water heaters, lights and rotisseries etc.  Make sure that you have the correct number of outlet sockets and they are all correctly protected by circuit breakers.

If you are considering an TV outside, please use an outdoor rated set (maybe even 12V DC).  Also consider water/frost proof storage for when the TV is not in use.  High power appliances such as a patio heater need a dedicated breaker.