I attended the Diversity Recruitment weekend at Harvard last year. I think it was a good way to get a feel for the school, program, and administration. They provided some very helpful and informative sessions on financial aid and writing your SOP. But I'm not sure "how" much it helps to get into the program you desire. You do get to meet the program director, so that gives you an opportunity to network.
Also- I applied to 15 schools (which was crazy and I don't advice lol) Half are focused around Student Affairs and the other half are more policy, research oriented Higher Ed Master's programs. Best of luck everyone!!
Please let me know if anyone's heard from UMichigan or Harvard GSE. They are definitely part of my top 5 picks.