I think that most (if not all) kids who were "blown away" by the game day atmosphere fall into two categories: (1) they were fans of Ohio State long before the recruiting process began, and/or (2) they are engaging in recruitspeak. If I'm wrong, then feel free to cite some examples.
Here are some cases of recruitspeak:
2010 MD TE Paul Phillips (cites the game atmosphere at Indiana as a factor in his decision)
2010 LA DT Harold Legania (discusses the "unbelievable" atmosphere and fans at Minnesota)
2010 FL WR Chevin Davis (discusses how he "loved" the game day atmosphere at Purdue)
2009 MI TE Demarkus Bracy (discusses the "fun" atmosphere at Cincinnati)
You can probably see where I'm going with all of this - Indiana, Purdue, Minnesota, and Cincinnati are not exactly known for their game day atmospheres, but there are four examples of out-of-state kids who made a game day visit and cited game day atmosphere as one of the reasons for their respective commitments. It took me about fifteen minutes to find these four examples - if I had the time, I'm certain that I could find many more.
With regards to being "blown away".... No matter how great the bachelor party, you don't call off the wedding and marry the stripper. When Ohio State gets involved with a big-time OOS recruit late in the process, the Buckeye staff has just 48 hours to make an impression. What are the odds that that "first impression" will be strong enough to overcome the months or years of goodwill that other staffs have built up with the recruit? Probably about zero, and that's why Ohio State (and just about every other school) rarely come out of nowhere to land recruits in the eleventh hour.