Formal Night Cruise Fashion

One of the best things about a cruise is the anticipation, and I’ve been doing some planning about what to take and what to wear. Since the cruise is with Silversea, some evening wear is in order:

Here is my latest purchase from Nordstrom.

I’m guessing that this should be appropriate for formal night on my first Silversea cruise.

What do you think?

(PS, this is a model, not your humble correspondent!)