Yes, the one thing I hated about the once a day cleaning is the amount of trash/plates that piled up. If you have 3-4 people staying in a stateroom, it's already pretty cramped. You only have a tiny coffee table to place items on, or a tiny desk/counter which is already cluttered with other stuff.
We bought a water package, and the trash cans pretty much fit two empty bottles. We all got C&A water bottles too, so we had a ton of water to get through. We often went to Sorrentos and brought back pizza and the plates/cups would just pile up. Or if we got snacks from Cafe Promenade, those are also given on plates that pile up. If only there was a place to drop off used plates on my floor, as I was certainly not going to bring them back to the food places.
Note, we also eat in our hotel rooms, but hotels have large trash cans near their breakfast areas, where we can deposit our food trash. I'm not advocating for cruise ships to change to disposable food wares, but noting that maybe there could be a place to deposit plates/cups.