Yes--you can park in the Rowes Wharf Garage underneath the Boston Harbor Hotel, which is where the boat will depart from. Alternatively, South Station, which services the Red Line and Commuter Rail, is a short walk away.
There are a variety of wonderful hotel options to choose from in Boston. Hotels in the North End, Seaport, or Fort Point will be closest in proximity to the wedding events. The Boston Harbor Hotel, Boston Marriott Long Wharf, Hilton Downton, and InterContinental Boston are all nearby.
A shuttle will run between the ceremony site and reception, and will drive back to the Boston Harbor Hotel at the end of dinner.
We will be heading to the Envoy Lookout Rooftop after dinner and hope that you can join us!