I think my pages of the various buildings in the World Showcase at Epcot turned out nicely and very few have pictures of my family in them. I really just wanted the buildings. You could also ask another tourist to take your picture but next time I have someone do that for my family I will be more specific about wanting US in the picture more so than the plant next to us. (Long story.) I guess I'd set it up and tell them where to stand.
I don't think pelple have to be in every picture I scrapbook. If it was something we found interesting I'll take a picture. Sometimes people in the picture can detract from the focus of your photo. I did my album for my children, to help them remember the trip, so a lot of my pictures had to do with things they liked. I have a picture of the boat we took to Downtown Disney, various rides, any shows that I could take pictures at, and I even took pictures of flowering plants at AK because I love to flower garden. I have the castle, tree of life, and Epcot ball. I think once you're there you'll start seeing things you'll want to take pictures of.
Have a great trip!!!!