My buddy and I always get together once a year to watch college hockey, and up until recently we did that be attending the Frozen Four.
Sadly, the cost of the tickets themselves, plus hotels, etc for the 4 days (minimum) it takes has slowly become prohibitive.
However, the Midwest Regional (or any of the Regional Tournaments, I assume) gives you a similar experience for a FRACTION of the cost. The crowds are smaller, so great seats are available throughout the arena. Also, the semi-finals and finals are on consecutive days, so it takes a day less than the Frozen Four to play 3 games.
I've seen the NCAA hockey Midwest Regionals in Cincinnati (twice) and South Bend, IN (once), and both locations were wonderful:
the same great hockey and the same passionate fans as the Frozen Four, ...AND it's less crowded (that's a 'plus' to me), at least 1 fewer nights in a hotel, and faaaar less expensive.
Recommended.