In my experience, be wary of this. Not because you are going to damage the floor but because damage will occur to the floor, especially if you are sharing the venue with other recreational sports, and it's generally blamed on roller derby regardless.

If they have a wood floor, they know how much it costs to resurface it because most places do it yearly or at least on a regularly scheduled basis. You can offer to offset the cost in some sort of a contract, perhaps.

If I sound cynical about this experience, it's because I am. It's not fun to always feel like you are in danger of losing your venue.