We had incredibly bad service at Boma last November. It may well be the worst service we've ever had anywhere. We had a DDE card, but this predated the mandatory gratuity for the DDE card; however, we were a party of 8, so we got hit with the mandatory gratuity anyway. I did not ask for a manager to get the tip reduced, as my 8 year old was exhausted, my husband was cranky because of the horrid service and we just wanted to get out of there. We usually have adequate service at WDW. We've never had outstanding service, and we've only had really bad service that one time at Boma. When we went back to Boma in March, we had perfectly fine service (from a different waitress).