The infinity is definitely showing some age, some rust here and there, some fraying fabric on chairs and probably the most obvious is the state of the cabin bathrooms which are really in need of some overhaul. On the other hand, the crew is outstanding...friendly, always say hello when passing. The food has actually, IMHO, improved....the food on the infinity is actually spiced so if the dish says "spicy", it actually is spicy. I also found that although they use a lot of salt, there seem to be less used on our cruise. Breadsticks were great when they weren't soggy which happened twice in select dining...quickly replaced. Our cabin attendant was terrific and thorough....but of course that varies (read the aqua class cabin review here). The ports are the ports...this is a big ship and it docks where it can...and as with many, if not most cruise ships, that's in whatever container port is available. South America is not Europe. Yes, the infinity was running on one pod, but that didn't cause any issues for our cruise.
We had guest speakers...talking about arctic exploring and auto racing....even though this was a panama canal cruise. No talks on the panama canal (or any other port)...pretty clear that celebrity just wanted to find two speakers on most any topic.
We saw the introduction of the new aqua spa cafe...nothing cooked to order, you just order from a fixed menu and they prepare your small plate on the spot. This is about the fourth try at change for that venue....at some point, they'll get it right.
sofa was in pretty bad shape...shower "curtain" might have been the original and shower floor was buckling...mirror had black spots where it's lost it's silver backing. Door to balcony was very difficult to open/close. The only plus is that concierge (and aqua) cabins have about 20 more sq ft than the other balcony cabins.
no global entry, but they routed us to a special fast path line....so it worked out OK. No customs inspection at all...but I think they may do random checks.
We booked a private excursion (for less than Celebrity wanted to see the same sites which would have required two tours). The port is awful and unsafe...with warnings everywhere about leaving on your own. The city is interesting...worth seeing once (with a guide).
I think every cruise in the Caribbean stops in Grand Cayman...and after you've seen sting ray city, there's not much to do. We only get off to wander around and shop (not for bargains...they get too many visitors to bargain very much)..