Some people go totally overboard on FE. But I think that most people have reasonable expectations. I bought most of my items at Dollar Tree and Target's dollar area. We did a couple of cabin gifts (cute magnetic photo frames and mickey q-tips) and then individual gifts for the kids of a few items each. My gifts were individualized and I tried to take into account character preferences, but that was not always possible. If they liked Minnie or Frozen, that was easy. But for some of the others (boys usually), they got avengers, monsters, or Disney jr stuff, depending on their ages.
I figured that my even though my kiddo has her favorite characters (Elsa, Minnie and Princesses), she likes pretty much all toys. Hopefully the kids in my FE group feel the same way. But if they didn't, then that's their loss. I may not have spent $50 per cabin or made hand crafted items (I have no creative genes), but I did put thought into what I bought people. And its the thought that counts.
We got great gifts. Some of them nicer than what we gave and some comparable. We loved the fact that someone thought of us. As far as the sundae kits- that seems to be a popular choice of gift and I hear of people who get lots of them. We only got one actually. We ended up not using it, because it was a port day when we got it. I was planning on saving it for my birthday which was the last sea day, but we had Palo brunch so that did not happen. We took them home and will enjoy soon. Even if I had gotten 10 of them, I probably would have at least taken the toppings home.