I would go for a romantic dinner at Palo, or for the Formal Night.... (not just out on Deck10.... or in your stateroom... or at your regular dinner seating...) In both cases, be sure to get the
DCL staff involved to make sure it all works flawlessly!!!
Hey, how about the Formal Night, followed by a private dinner at Palo!!!
If you would want to consider the Formal Night, This would be an excellent set-up, at the foot of the stairwell in the Lobby, with Mickey and Minnie in Tux and gown. I can just see the photos of you and your Fiance, with you on bended knee, at the foot of that stairwell.... the kicker would be, that everybody is there at that time!!! Either lined up for the photos, or just enjoying the activity on their way to dinner, etc.. You will want to have prior arrangements so that you are not standing there in line, but escorted right up to be the first ones to have your photo done when Mickey and Minnie make their big entrance.... On our cruise, there was one occasion where the cruise director, Rachel, was on the speaker once to call attention to one special little boy who was meeting Captain Hook... So this could conceivably be big deal!!!
Bottom Line.... YOU know what your future bride would appreciate the most... The most romantic thing is to be able to make the effort to make it special just for her!
Like, for me, I do not like the idea of being called up on stage... that would be uncomfortable... And, sorry, but the idea of a gorgeous sparkling diamond ring with sticky wine, champaigne, or dessert on it..... nope....
Congratulations and good luck!!!!