Well Feb in Florida can be really nice, or can be really miserable. Case in point. I got married the first week of March and it was in the 80's that day. The week before when friends hosted a party for us that was to be on their deck overlooking the gulf of Mexico, it was 28 degrees and had rained for 3 days. After our wedding and on our honeymoon in the Florida Keys, it rained and got cold again. The Orlando area had another hard frost and saw temps in the 20's and 30's. But like they say that time of year in Florida: Don't like the weather? Wait a day.
Disney can be fairly crowded in Feb. towards the end because of spring break. It's a sure bet it's going to be fairly crowded from the day after Christmas to Easter because of Florida's seasonal tourists. I find the crowds more tolerable during that time of year. Summer it's crowded and hot, winter is crowded, but usually pleasant. And it's a myth that it doesn't get cold in Florida in the winter. I never saw so many cold and miserable spring breakers the year we got married who had only brought shorts to Florida and the highs were in the low 50's for the 3 days we were on our honeymoon.