We went to a game last year and highly recommend it! The atmosphere is amazing, totally different to games in the UK! We booked it as a package through dolphin tours last year but wouldn't recommend it. You don't arrive until about an hour before kick off which doesn't leave you with much time to join in the tail gaiting!
We're going to use Uber to get there when we go to the Columbus Crew game on the 17th September, that way we can have a few beers without worrying about a designated driver, not to mention trying to park!
Just as a heads up, you can't take backpacks into the stadium. We got caught out with that last year!