When I was younger I used to love going to Acadia NP in October. It is a wonderful place to photograph , so beautiful and easy access to most areas . In a week you could come home with enough photographs to keep you busy for months.
this year for the first time in 9 years I visited and was shocked . it has turned in to a madhouse with so many people . crowded everywhere . You will find that your waiting in line for everything. waiting to go to breakfast after 10 am and your still standing in line outside.
the one good thing , it is still one of the best fall foliage places to visit in the east. just plan at least a week there should you want to see most everything you would like too.