You can have your retreat on campus, using your institution's facilities. It will almost always cost less than using a hotel, conference center, or wilderness retreat facility.
Having a retreat on campus isn't very "exciting" to your officers and members. Hosting your retreat off-campus brings a level of fun that student governments need. Being off-campus can lead to very positive team-building. Members can get to know each other better through the travel to and from the retreat.
If you have an overnight retreat, there is more opportunity to learn about each other, brainstorm, plan, share concerns and ideas, and build your team and develop camaraderie.
ASGA's MISSION STATEMENT:
The American Student Government Association will provide all Student Government leaders and advisors nationwide with networking, research, and information resources and will teach them how to become more effective, ethical, and influential leaders on their campuses. ASGA also will promote the advancement of SGs, conduct research as the nation’s only “SG Think Tank,” and advocate the importance of having a vibrant, autonomous Student Government organization at every institution in America.