We went Feb 12-Feb 17. We found it to be busy (is WDW ever slow???) but not awful at all! There were lines, but I know it couldn't possibly have been like their peak Summer Time. The longest lines we encountered were Space Mountain, Soarin', and Test Track. Every where else was just a normal wait to me (20 mins or less). We stayed onsite, and took advantage of the EMH. At the EMH's for MK, we got onto Pirates, Small World, Teacups, Snow White, and Philharmagic with NO WAIT. At the AK, we got right onto the safari with a 5 min wait. That was great! I would encourage you to evaluate for yourself if you want to do the late park hours. We did those, but wouldn't probably do them again. Most people are not willing to get up an extra hour early to party, but most people ARE willing to stay up an extra hour to party. So, we found the EMH to be much better for us. We were very pleased with our trip. We aren't commando planners, but we did have a strategy. We looked at the park maps, and decided what we wanted to do. If we didn't get it all done, we took our last day and completed our strategy. The ONLY ride we didn't get to do (as part of our strategy) was Test Track because it was closed the day we went. The only show we didn't get to see was Country Bear's Jamboree because it was closed. As part of our strategy, we decided each night where we would counter service the next day. That way we weren't wandering around looking for food, and we could plan our walking around where we would land for lunch. That's the MOST planning we did, plus making our ADR's in Oct. We were very flexible about the when, and the where we would go. Because I have older kids (preteen, and teenager), we could flex and go without naps. Well, ONE of us had a nap...but that was because I was getting over a hospital stay!

Anyway, we loved it. We were planning on going back in Dec, and had made tentative plans, and were starting to save....but then this mean trick of FREE Magic Your Way dining came up...and who can resist that?

We did the MYW Dining in Feb, and couldn't have been more pleased. So...that was our Feb experience! OH, and while we were down there, Fl set record lows! GRRRR We took a fleece into the park every day, and just put it in our backpack when it got too warm. You have fun!!!
*edited to add* I do not know about the fireworks because we didn't plan well for those. We ended up not seeing any night shows except Fantasmic (MGM). We definitely enjoyed that!