We live 9 miles from Ramblin Pines. We camp there every October for the trick or treating. While it is a lot of seasonals there are also a lot of weekenders and the seasonals are well maintained, mostly older people with nice equipment, and very friendly. Ramblin Pines is in the woods and not known for strong WIFI. Anywhere around here you are going to need your own wireless internet access.
If I were doing your trip I would want to be closer to Gettysburg and just make the day trip to Baltimore for the game. More interesting stuff for you to see at Gettysburg. Lots of campgrounds in Gettysburg. Let rvparkreviews.com be your friend.
If you are wanting to be closer to Baltimore then consider Patapsco Valley State Park in Ellicott City. Very close to Baltimore. Typical MD State Park camping. 1/2 the price of Rambling Pines. Very quiet, being so close to the Beltway, MIFI service should be strong.
