I have some flight miles accumulated and would like to take my wife and daughter on a trip this summer. My daughter will be 1.5 years old at the time. I am open to any suggestions. Thanks for the input.
I would say a cruise......
Here are my experiences......
Took my 18 month old son to the Abacos, Bahamas. Specifically Elbow Cay. Great vacation but you need another family with you as you get around on a Boat. You need the women to watch the kids while the men anchor and dock the boat. But if you go with another family, it is a wonderful place.
There was is a beach called Tahiti Beach that is perfect for young children. There is a section of the beach that goes probably 50-100 yards out without getting more than 6-8 inches deep.
Last February, we took my 28 month old on his first cruise. He was able to participate in the kid's camps(2 and up) although he spent very little time there. We used it to go to dinner by ourselves 2 nights on the 7 day cruise. Even without the camp, it is a fun time. We went on Carnival but if you go on Disney, I believe you can take non-potty trained kids in the water with a swim diaper due to the filtration system. Carnival only allows potty trained kids in the water due to health concerns.
Here is my son on the sub-ocean excursion.
http://i.imgur.com/kfMXd.jpg
And this is my son being a tree hugger at a mayan ruins site.
http://i.imgur.com/cSue8.jpg
Yes, at your child's age, they won't remember it. However, everything you do impacts who your child is and who they will be. At 3 years old, my son still remembers the zoo we visited. That doesn't mean he will remember in another year, but for now he remembers it.