Lots to see if you like to 'people watch' ! Also watch the parades if you are feeling lazy . We have always paid the difference when booking inside to upgrade to Promenade ... Until last fall. We did b2b.. Symphony (boardwalk balcony ), followed by Explorer (Promenade ). At the end of the week we realized we hadn't opened our curtains since the first day . After that we saw a great price for Wonder a couple months ago but price only good for an inside , so decided to give it a try , and loved it!!
We enjoyed the Prom view for many cruises ( And you will too ) but will no longer spend the extra to upgrade if choosing an inside cabin ,
Cheers