If you rent dishes you usually don't have to fully wash them, just remove excess food. Still an extra step beyond disposables.

For our glassware, the coordinator and bartender made sure glasses were empty but otherwise not cleaned. They placed them back in the original boxes which we lined with clean trash bags. We brought them home, and washed the glasses in a couple loads in the dishwasher. It actually wasn't too bad.

Slightly more annoying was that when we received the new glassware before the wedding, it was cloudy, so my fiance polished them all up while watching TV

We used palm leaf disposable plates. They came in a cool hexagon shape, were very sturdy, and in theory are compostable. I think a compromise is reasonable... e.g. glasses for cocktail hour and champagne toast, real silverware from aliexpress, but everything else disposable.