Quick background - My husband and I have four kids, ages 9, 8, 3 and 2. Also on this trip was my parents, my three sisters, and a sisters spouse and child. 13 of us in total - we had 4 cabins, all obstructed view balconies.
We drove from Boston to Baltimore on Saturday and stayed in the Days Inn. Hotel was fine, free Wifi and breakfast. Also a free shuttle and parking for the week.
Got to the port, check in was absolutely smooth. My family didn't have passports, and it didn't complicate things at all. The two bottles of wine and 12 pack of Red Bull were absolutely simple - no problems at all.
Awesome, Awesome, Awesome. Don't let the fact that it's an obstructed balcony discourage you, we had an awesome view and would definitely book this cabin again!