How crowded is Columbus Day compared to a normal Saturday or Sunday? I know it's a federal holiday, but it's not one of the holidays my company offers and I suspect other companies don't offer it as a paid holiday either.
Most schools have Columbus Day out, so that makes it a 3-day weekend so it will be crowded. Maybe not as crowded as other holiday weekend, but noticeably more crowded than an average weekend in October.
It's going to be pretty packed, especially with the Halloween theme set up. Many people take advantage of the three day weekend no matter if their company gives them the day off or not. Monday not be as packed, but Sunday will seem like a Saturday.