I had a huge reply for you, but the site ate it. 😳 😞 I did this cruise last year on Emerald.
International Cafe - good for snacks, or even lunch/breakfast
Explorers Lounge - nice area for daytime reading, trivia at various times, night time live music, or comedy
Good Spirits at Sea - nice area for daytime reading, and fun drink making display, as well as cocktails
Skywalkers Lounge - nice area to read during the day
Outriggers Bar - good drinks, nice view to sit and watch wake views
Wheelhouse Bar - Pub lunch if they offer it
The Sanctuary for canal transit day. Extra cost but breakfast lunch and tea are served there. You get a reserved seat for the day. The area offers great forward views of the locks, with some shaded areas for relief from the sun.
I enjoy reading your travel reviews of your trips. I look forward to this next adventure