Apologies again for hijacking the thread. I'll chime in on your questions. Unless you easily chill, no need for a wetsuit. I dive in shorts and a rash guard even in the dead of winter on Utila. Diving on Utila is super super easy. I can't remember ever being in current there. So, if you have both and like your closed heels, you can feel free to use those. Plenty of laundry services on Utila. Don't know about the resorts. Don't know about whistles, etc., but a new shop just opened on the island and I suspect that you can find that sort of stuff there. That said, on almost every dive you will be no more than 100 yards from shore, so don't go too overboard with safety gear. This isn't the galapagos or Raja Ampat where currents can be fierce and you are hundreds of miles from civilization. Generally, you can find lodging on the island when you arrive unless it is a holiday week. Depends on what your lodging requirements are. If you want something private and on the beach, you should go ahead and book it. Check out aboututila.com for the various lodging options and feel free to ask questions about them.