Don't know what the crowds will be like in Oct. but can help with some of your other questions. Kids meal is for up to 10 years, think that is for all the Disney restaurants. We were there in May and H&V was also sold out but it didn't feel crowded, did not feel at all rushed. I would not eat at BD because their menu really does not appeal to me and I think the prices are high. H&V is buffet and I really like the food, and the desserts! We had an early PS that I had made 60 days out, and about a week before we left I called to see if I could change the day and was able to get a later time, think it was 6.