What is involved in a school's sponsorship of an NCAA regional?  Is it
money, manpower or both?

We had this discussion during an extremely boring ECAC semifinal  (Harvard
10 - Dartmouth 1) and no-one knew the answer.  The staging of the regionals
every other year has always been sponsored by RPI, never by Union or a
collaboration of the two.  The benefit of sponsorship is that RPI would
automatically be placed in the Albany regional if they ever again qualify
for the tournament.  It just seems to me that sponsorship would be a good
investment for a school if the cost wasn't too high (unless of course the
school administration places absolutely value in the school's sports
program).

Also, since another perennial site for regionals is in Worcester, why is BU
always the sponsor?  BU, BC, UNH and Maine are often in the tournament.
Wouldn't it make sense for one of the other schools to rotate the
sponsorship?
BC always seems to be coming to regionals in Albany since BU has Worcester
all locked up.

Perhaps the rules do not allow schools to sponsor the sharing of sponsorship
since that might restrict the seedings of the tournament if multiple schools
sponsored a specific site/