Have heard that they close fairly early, but if you get in early you may be able to get to at least one of them. There are 2 fairly close to the pier and in MHO they are worth seeing. On your way out of the pier area you will go right by El Morro and if you are out on the deck it truely is a sight to see, to me it was kind of spooky?? Hope you can catch that. Would be even nicer if you can get there
when you dock, good luck, hope you can, its worth it for the scenic view from there alone and also the history behind it.