Isle Casino Hotel Bettendorf – Book your two-night Isle Bettendorf stay and save 5%.. Book by March 29, 2023, for select travel dates now through March 2023. Two-night minimum stay required. Blackout dates apply. Must book on promotional code for the offer to apply. Additional taxes and fees apply. Must be 21 years or older to book hotel rooms. Not valid with any other offer. Offer varies by property and is subject to availability. Offer subject to change at any time.