YMMV, but we have used the Wishes FP several times and have never been crowded the way we've been on Main Street. My kids have even watched from the grass in that area and had no problem seeing. It's not "empty" by any means, but you don't have people crushing against your back or standing on your toes. With littles, it's definitely worth a FP for us, at least once during our trip. We usually do MK our arrival night and get the FP then so we don't feel like we are "wasting" the chance for additional day-of FPs, but I wouldn't hesitate to get it on a full MK day either. We usually plan our FPs for the afternoon/evening anyway. Again, others may have had a different experience, but we love it. The parades, however, can really be seen from anywhere, and while we've tried the FP area, I likely wouldn't do it again. Not the same "value" for us.