LL Bean (Freeport) is not on the way from MA to OOB. It is quite a bit north of OOB.
You won't be able to get coach parking close to the flagship. The lots there are narrow-access roads, no place to turn around, and usually jam-packed with cars driving around, hawking for a space.
Freeport itself is very congested. LOTS of pedestrian crossings that you must stop at. LOTS of traffic.
Look at the south end of town, Grove St. and Depot St. There is a lot with RV parking. Coming from the south (use the Desert Rd. exit, 20, don't go all the way to 125, exit 22), turn right at the Fire Department. Navigate around the tour busses that usually stop there. Turn left on Depot St. Look at the lot on the left - it has 4 pull-thru spots.
Do yourself a favor and study Google satellite view for the area (don't let the parking lot spaces fool you, all those off Morse and Cross and Justin's are generally packed by 10 AM).
You would be wise to get there very early to snag a spot.
TBH, we would never take our coach there. Much easier just using the towed.
2017 LTV Unity U24CB
2003 Foretravel U320
1999 Lazy Daze 30IB