What is the weather like end of january? I have heard conflicting info. Some say the water is too cold to swim in and others say that it is perfect. I would be leaving a climate where the days that time of year are 30s and 40s. There are 3 couples traveling with 6 kids under age 6 and we just want to make sure they can enjoy all the pools. Also, anyone have any opinions or experiences with the meal plans?