Starlink, hands down best option, they have a new RV plan that is marketed to seasonal RV users (you can pay by the monthly billing period, which is great for people with fiber internet at home in the non-travel season), best of all the RV plan is available to ship right away so you should get it within a week or two. (cost of the RV plan is I think $10 per month higher than the home plan with roaming enabled, I think $135 per month, plus $600 equipment up front). The downside of Starlink is the dish needs to be placed in a location with clear view of the sky in all directions above about 25 degrees above the horizon, so it is not good for an campground with a lot of trees. The dish ships with a 75 ft cable, though a 150 ft cable is optional for about $100, which lets you move it around a little to get clear line of sight. See this recent youtube video complaining about lack of coverage when surrounded by trees in a campground, note this issue should get better over time as more satellites are launched (another 59 were launched this morning, putting the total count at nearly 2,000 in orbit).