going to St. Kitts and Nevis on Saturday and have no idea whether I can plug US appliances into the electrical outlets. I called the hotel (Marriott St. Kitts Beach Club - the timeshares) and they said the outlets are 110 Volt. I think US is 120 Volt? What is the difference? I am worried because St. Kitts and Nevis are a UK commonwealth, and I know from traveling in the UK that their outlets are totally different than in the US. Do I need an adaptor? If so, what kind? Thank you!