We have 5 old toyota previas that we’d like to scrap. Do we have to take out the wheels? Also, what else would we have to take off the car? Or is that up to them?

It might only cost you a couple of bucks by leaving the wheels and tires on the car. They will deduct from the price you get, if the fluids are not drained. It's one of the easiest yards to get in and out of and there fast.

Yes it is better to have the tires off for a better price. You also need to have a title for each car. Required by the state. If you pull car in you can remove the tires there and take them with you. Hope this helps

I would give them a call. I've heard other scrap places need the fluids drained before they can take a whole car

You can take the cars in whole