You are asking two very different questions.
The first question is the ease of getting a reservation. TT campgrounds are like any other campground group. Certain times of year, certain campgrounds are very busy. If you want me to go to Orlando during Christmas or spring break - book your reservation at the earliest possible date. Coastal locations like Seaside in Oregon book quickly for Memorial Day, July 4th and Labor Day.
Another tip. It is much easier to get a two week stay for the 4th of July if you book Jun 21-July 5 rather than July 3 - 17.
Finding a quality site. This can be harder in popular locations at the busy time of year. I am not a fan of TT campgrounds selling Personal/Annual sites. It seems the very best sites at every campground we visit are Annual sites.
OneCG we visit often has 24 sewer sites, out of 400 sites. 12 of those are Annual sites. On the day someone is scheduled to depart a sewer site, Iโve seen two or three rigs lined up at 6 am waiting to get into that site.
Some campgrounds have a rotation/ turnover process. Some do not.
Like many TTers, the first time I visit a CG, I will walk the property with the map. Marking out Annual sites, and marking sites I would like. Also if Iโm in a less than ideal site, I will note the checkout dates on sites I might want to move to. Moving to a better site can be an option at most CG, just check with the management before you move.
My TT โyearโ is Oct 1 - Sep 30. Last year we stayed 200 nights atTT campgrounds - 4 inTexas, 1 in AZ, 5 in CA, 3 in OR, and 7 in WA. We had a great year and our costs were very reasonable even after buying a used membership and the yearly fee. We are over 90 days at Royโs CG in Texas so far this year.
Full-Time 2014 - ????
โNot all who wander are lost.โ
"You were supposed to turn back at the last street."
2012 Ram 2500 Mega Cab
2014 Flagstaff 832IKBS TT