They say you can make reservations. Unfortunately, with MSC, policies differ from ship to ship - and even sailing to sailing. That’s why you may see YMMV here quite a bit. But, you will get a 2-top. Sorry if I didn’t make it clear. It’s just that there may not be one immediately available at the time you show up.
There’s a separate section for Aurea in MDRs that are shared with non-Aurea. The waiters have less tables so service is (supposed to be) better. We’ve certainly experienced some great service when in the Aurea MDR.
I know that the YC question wasn’t aimed at me but, as an FYI, we sail YC sometimes.