Sapporo Snow Festival

Originally, our flight is scheduled a week before the snow festival. But there were changes in the flight that made us eligible to rebook it until the week of the snow festival free of charge. But we checked the hotels, all are double the cost vs the week before the festival. We'll be going with our 4yo kid.
My question is, is the snow festival worth the double cost of hotels? We are from a country with no snow so this is also our first time to experience snow.
Is it too crowded and will it be ok for a kid? Thank you!!!

by Icy-Poem-6642