For Pigeon Forge, consider The Dell at Hidden Mountain. Go to Hidden Mountain Resort, Inc. | Cabin Types | The Dell RV
for information. If this is your place to stay lot 2615 or lot 2605 are good choices. You can reserve a specific lot via their web site. 1 mile off the parkway, behind the Opry/Titanic attractions. If you want to be the closest to all the shows, The Dell is the place to be. Very large sites and peace and quiet is what The Dell offers. For discount tickets, go to Walmart. In the lobby is the largest discount brochure rack you have ever seen. Buying tickets, before you purchase go to the Opry ticket office. They have really good discounts on several shows.
If going to the GSMNP check the weather, at the park. The GSMNP is much higher in elevation than The Dell. A good gage is from lot 2615, you can see Mt. LeConte, the 3rd highest peak in the Smokies. You will be 1K above sea level. Mt LeConte is 6.5K above sea level. If the mountain is white, call the park to determine weather conditions.
If you want a CG environment, there are many along the parkway. River Plantation is a good choice. http://rvcoutdoors.com/river-plantation/
No traffic light to get into or out of the Parkway. Other than that it is a nice place.
For Ashville, consider Asheville RV Park and Camping | Asheville NC Camping | Tent Camping
again, watch the weather. On the east side of the Smokies you will be at a higher elevation than on the west side.
Florida is a big state. Respond here or PM me on where you would like to visit. I home base in Florida.
There should be no problem finding a site everywhere but Florida. The farther south you go the harder it will be to get a site.