Hilton Omaha 1001 Cass St. Omaha NE Certificate for One Night Deluxe Room. Certificate valid for One Night Deluxe Room (in a 1-King or 2-Queen bedded room). Advanced reservations are required to use the certificate. Reservations must be made at least 7 days in advance and are subject to space available. Certificate is not redeemable during anticipated sell-outs, peak occupancy dates, events/concerts at the adjacent convention center or any dates pre-determined by hotel. Certificate valid only at 1001 Cass St. Omaha NE location. Certificate expires 1/1/2020.