There is any parking available?

There isnt at the museum itself but just as you get off the 93. They are about 15$ on the weekends

Yea there's a garage near by but it can be pricey.

Not directly associated with the museum. The museum will validate for a couple of nearby garages. There are several pay garages around that area of the seaport.

There is a garage..but public transit and a walk is cheaper.

Better off taking public transportation but yes there are multiple garages in the area.

Yes i think it coast 7$