Definitely shocked at the lack of response of local Management, during the outage and afterwards. Not that it matters but for a college graduation in a small town, you can bet rates were sky high. Unexpected stuff happens, but how you react to it is what matters.
A simple apology, pizza party, complementary drinks, coupon, etc would have gone lightyears towards lessening the impact. Instead, it sounds like they counted on the nature of the infrequent travelers that tend to populate these events to "shrug it off" and not complain like the OP did. They did not want to share their windfall would be my guess.