Fron Acadia NP to Niagara Falls

Great Trip you have planned. Acadia is one of my favorite places, I could do 2 weeks there and never get tired of it. Letchworth and Watkins Glen are both real gems in western NY. A lot of wineries around Seneca Lake if you like that, and both have nice campgrounds for tenting. The Lake George area has a lot to offer as well and is roughly half way between your end destinations. For NY state parks, make reservations for weekends as they tend to be fuller that time of year. Weekdays you will find sites available easily. Also, plan on going to the Canadian side of the falls. The experience and grounds are just all around nicer on that side. Much better view as well.