We were in Curacao until 11pm 2 years ago and we went to dinner at Perla Del Mar at the suggestion of a cruiser who had been on board for 9 weeks and frequently ate off of the ship. It was very delicious and it's an easy 20(ish) minute walk from the ship. We walked back to the ship after dark and never felt unsafe. The restaurant sits on the water and the view of the ship at night is wonderful! There are several shops and bars in Rif Fort that are also really cool at night. That is right off of the pier.
For Aruba, we are thinking about going to dinner at Lucy's Retired Surfers Bar or West Deck. I think they are both about 10-15 min walk from the ship and both sit on the water.
I look forward to reading your live blog when we get back! We aren't purchasing Voom but it'll be cool to read about the same cruise through someone else's eyes!