Florida

Good luck. The past few years we've seen a huge increase in RV all year long, not just in the winter. February is the busiest month and you have a large rig. You might be able to find a spot for a few days here and there, but normally the sites available are the least desirable (small) and might not work well for you. I'm sure it could be done, but may be a tad stressful. We were in the Keys last Feb and out 600+ rv park was completely full, as most others, and even hotels were completely booked.

Spend a couple days in Everglades on the way in, or way out. Great place. Flamingo has Elect/Water sites, but you need to reserve early. Otherwise, dry camps but water and dump, and showers available (cold shower, but it's the Everglades, plenty warm even in dead of winter) Make sure you take some time at Royal Palms too, inside the park entrance...

Yes it can be done, even in Feb. There are plenty of RV parks that do not advertise so use Google and a town to find places... even in the Keys as they will have several days between longer stays. It's actually harder to find several weeks in the winter than several days.