I like taking my dslr. Ya, it's bigger. But I have an 18-200 lens that can help me get all sorts of shots. The controls are easier. And I can quickly take multiple photos of any shot/situation to make sure I get the "good" one. Every time we go to the park, we think "let's just take the small one"...but every time, we end up with the big one and are happy we did.
Last summer, we went to Hershey. The first day, I took our small point and shoot camera. We got back to the hotel and had only taken 30 or 40 pictures. Kind of disappointed that there wasn't much to shoot. Day 2, we took the larger camera around the hotel grounds and the park. Took around 400 pictures. Same thing on the third day. So, it may be bigger/heavier, but it's easier to take multiple photos, zoom, etc. Definitely enjoy using it more.
Either way, have fun!