Summer fraternity parties and enforcement of rules

[BlueCarnation]

This may be different from campus to campus, or organization to organization, but I'm curious as to how/if your campuses enforce risk management rules during the summer? We have summer classes and there are men living in fraternity houses, but all sorority houses are closed. There are some fraternities that are having organized parties (they are renting out 3rd party vendors, renting buses, etc.) and inviting sorority members to them. Would you treat them as you would during the regular school year? Would they be subject to the same rules of registration, monitoring, etc.?

Thanks!