Nightlife is exciting for sure on the island from great dining to live music to enjoy here are some websites for the places I mention

www.grandhotel.com

https://greaturtlebrewing.com

www.seasbiscuitcafe.com

www.mustang-lounge.com

www.marysbistromackinacisland.com

www.hornsbar.com

www.pinkponymackinac.com