If you tell them the situation, that you might have to walk away, then they might be able to find some money. Funny, I've never actually had my milage reimbursed but a theatre, one of the cons of working non-union. I've gotten things from parking to overtime to health benefits, and housing, but I've never had a theatre, whether it's a non-union stage management job, or non-AEA positions at LORTs, reimburse milage to get there, just for stuff once I got there. It sounds like they're willing to meet you half-way, which is more than a lot of other theatres do that are under non-union contracts, so I would look at the contract as a whole before I made a decision on a contract based on the milage. What else are they willing to give you that makes up for it, what your other employment options are, and what the pros of working there would be, etc.