I was there Feb. 6-12. The weather was very nice. I wore capris during the day and changed into jeans and a jacket at night. It was cool in the shade and after the sun went down, but it was upper 70s during midday. WW
Crowds weren't bad at all. Fastpass return times were only about 30 minutes out, so we could get a fastpass for one ride, ride 1 or 2 other rides and get a drink, and it would be time for the fastpass return. Even Soarin' had little to no wait. The longest wait we had was for Everest, which was about 40 min. I think. We got there around 1 or 2pm and fastpasses were gone.
On Saturday night, Pleasure Island had a Valentine's event that we went to, but didn't really enjoy. There were supposed to be cupids telling your fortunes, but they were more making fun of people for being married for a long time. I suppose some would find it funny, but we didn't find it in good taste.
Most of the parks had normal hours except for when MK closed early for the Princess and Pirate party. We did MK EMH evening one night and got lots of rides in.