I do not know how to multi quote so..
As for the taxi voucher, it was a special when we booked, it was also written in our confirmation and stated something to the fact to present letter to driver and they would pay when we got to Chankanaab Park.
As far as the photos and pictures; the pictures are individual so for me, dh and three kids they took close up pictures of the dolphin hug, kiss, shake and something else? I think there were 4 total. They gave you a deal if you bought all for your family but we only bought the three kids. We also got the video, which was very nice as our group consisted of my family another family we met on dis boards and one more dis friend (her kids were not old enough to do the royal swim and doing the dolphin encounter) So we knew our entire group, and I still like to watch this. I do not remember the cost off hand...but I will look up and let you know, I still have the receipt somewhere.
So far we have nothing booked for Cozumel, we will have to see... Chat night sounds like a great idea, we actually had a chat night (i hate to admit

3 nights a week

) on our last cruise, this was a great way to get to know each other prior to cruising! we started our chat night more than a year prior to the cruise and built up the nights about six months prior. Yes, we are addicted!