I completely understand you OP. I also have absolute freedom with my charge. I take him on many outings. I used to feel guilty that I am seeing have so much fun, and not his parents. They may feel a tiny bit resentful that they don't get to enjoy these unique experiences with them. But if they are not saying anything. Keep on doing what's best for your charge.
My last family was different, I came up with cool outing ideas. And when I asked if I can take the child, the parents would do it with them on the weekend instead. Understandable too.
Different families have different needs
