I have done them a few ways, but medium on the grill if prepared right can taste very good and not so different than beef. I have had it so don't cut the lady so much grief.
Now baked in the oven till well don't taste just like an old work boot and if ya don't believe it give it a try.
Another good one is to marinade it 24 hour in a cinnamon brine. I will have to track down that one because I can't remember, but I think it also has soy or worchester sauce and a couple other ingredients. Put on the grill to medium or less if you like, very good! Good old poppers with the pepper and bacon wrap are always a good one. I don't like hot stuff so pickled jalapeños are a good options there.
However, once I got a smoker I never ate a goose or duck any other way than smoked and slow cooked or in jerky. Goose jerky done right is so good most people like it better than beef or venison; I do and so do my kids. We fly through a batch as you can’t stop eating it. I will do a mixed batch with venison and the goose or duck is gone first and I have seen it at parties I have taken it to with people that don’t even like wild game. I have tried a lot of different ways to do the jerky, but good old High Mountain original and follow the directions. About an hour of mesquite smoke is the key to unlocking and getting the best flavor combo for waterfowl.