Regent does not have any accommodation.   If you want to stay on the UBC campus there are 3 options.  All are close to Regent and to the theatre where the ceremony will be held. You will need to book your own accommodation.

Carey Hall: 
5920 Iona Drive
Vancouver, BC V6T 1J6
(604) 224-4308
www.carey-edu.ca/accommodation

Triumf House:
5835 Thunderbird Blvd
Vancouver, BC V6T 2L6
(604) 222-1062 or (604) 222-7633
www.triumfhouse.ca

West Coast Suites:
5959 Student Union Boulevard
Vancouver, BC V6T 2C9
(604) 822-1000 or toll free: 1 (888) 822-1030
www.ubcconferences.com/accommodations/west-coast-suites