I have never run into a campground that doesn't have 30 amp boxes and if they have 50 amp a lot of times there is a 30 amp receptacle next to the 50. I have a 30 amp TT and only have a 15a adapter for home, never needed anything else. Happy Camping!
By the way, invest in a 30a extension cable, you will most likely need it sooner or later, Walmart carries them or any other camping store.
Mark, Debie & Belle the wonder dog
2013 Prime Time Crusader 36 ft 5er
2008 Chevy Silverado 2500HD crew cab, 6.0L