Upgrading at counter
Going to OGG in May, and have a killer rate on a mid-size already reserved. A convertible or Jeep sounds fun, but not at $300~ more for 10 days. However, if I could get that upgrade for around $100, I might pull the trigger on it.
Has anyone had good luck negotiating a cheaper upgrade at the counter? I know it would only work during non-peak times, which May pretty much is.