We are staying at Key COlony Beach for a week in mid april. Looking for options. We have 4 adults and 3 toddlers aged 1-4 in our group (and my pregnant wife). We are planning on renting a boat for a day and going for a picnic on an island, maybe fishing while the kids nap, etc. We are staying at Sea Isle Condos. Any great ideas on what we should definitely not miss? Also where is the closest walmart type place where our friends can get diapers etc so we don't have to bring them on the plane.