Do they fill propane bottles?

Yes

Northcrest RV park exit 342B

Yes they do Shannon.

Also the mobile home park @ 35 and 77 intersection coming from the North on 35, where it splits off just past Elm Mott. About a 1/4 mile from the Ranger Truck stop going south, and on the opposite side of Ranger Truck stop. Real nice guy. Pull up to the big tank. Call the number on the sign right there and he'll come running.

Not sure, but Ace and Star Tex propane do.