I would recommend having someone with saltwater experience check on you tank.
You can have a neighbor check on it and feed the fish daily but I would recommend a "professional" at least once a week. They can clean the skimmer, do a water change, look for potentional problems, etc.
I have used Misti with Sea Clearly maintenance (one of the ARC sponsers) and was very pleased. She would also be available if the neighbor noticed something was wrong. Cheap insurance and peace of mind in my opinion.