I will be arriving in NYC on 28th october for a week. Have 2 9yr old kids with me and would like ideas of things to do please, hopefully some free, budget stuff. Staying out near Fushing Meadow in and Air bnb. Have Bronx zoo pencilled in for wednesday as its free, and hoping to do some stuff on halloween, so welcome suggestions. I look forward to Urban doing its usual best to entertain me. Thanks in advance.