Our experience wasn’t quite as confusing - they knew about the set menu. But they didn’t offer us any drinks at all! Or, at least, didn’t offer / tell us that there were drinks included.

I agree that the selection on the set menu wasn’t great. You do get plenty of food but the choice is more limited vs the main menu. I didn’t understand why they restricted it so much since the set menu items were all in the same price range as the regular menu items. It would have made more sense if they just said “you get one appetizer, one salad or soup, one entree and one dessert” rather than this whole other setup.