Lots of restaurants in the Ann Arbor area--the high end ones, mainly. Im a big fan. Theyve made a lot of good updates to make more user friendly.
Make sure you do let the restaurant know that you reserved even if its an empty restaurant. One time I did but the restaurant didnt check me in. Open table sent me a cranky email about no showing. Always cancel on the app or call.
Kt3172415 about OpenTable, v10.2.0