They provide bikes, all the same model. They will require you to call them 48 hours in advance to get your height so they can prepare your bike. You can always ask them then, maybe they will allow it, I don't know.

hola nosotros los hicimos solos, con el mapa y fue genial. poníamos candado y un poco caminábamos!!!!!!!!!!! me encantoooo

I agree to the response from luvhrsz. Bike and Roll will sign you up either online or over the phone. I purchased the New York Sightseeing pass for 3 days for 2 people. This allowed me to enter us using my pass. I called to make the reservation. I agree that you will want to wear comfortable outdoor clothes as it gets warm. A bottle of water is provided. There is no place to store things once there so unless you want to take it along on the tour do not bring it along. (such as a purse). Also remember to bring sunscreen.

It should have a meeting place on the Viator site. Or google the name of the Bike place, I just can't remember where we met.

They don’t have tandem bikes, but they have trailer bikes they can hitch to the back of a regular bike- I suggest you call ahead so they can prepare it. We did this for my two small nieces (11 and 13 yrs old, both under 5 feet tall). If your daughter is tall, she might not be too comfortable riding the trailer bike.

Ours was around 2.5 hours