From the MoA: "A separate agreement between Wynn and the Proponent shall be entered into to disallow overflow stadium parking at either the Encore Boston Harbor or Wynn's East of Broadway garages."
Oh come on - you're all smart enough to think a little more creatively. Encore, with a lot DIRECTLY NEXT TO THE STADIUM, AND A SKYWAY TO THE CASINO is ABSOLUTELY going to use it's parking for this, it just will make the parking ALSO require gambling/restaurants/spend. To be clear, I think this is absolutely fine as I would rather not build more parking lots, and $50 is about what you'd pay for a Bruins ($54)/Celtics ($60) game parking. [Edit - Patriots were $40, but apparently raised ticket prices, and eliminated the parking fee]
The current validation rules:
Encore Boston Harbor Parking FAQ
CAN NON-HOTEL GUESTS RECEIVE COMPLIMENTARY PARKING?
Yes. For non-hotel guests, valet parking or self-parking will be validated once per day, per vehicle upon receipt of
$50 spent within the resort.
DOES EVERY PURCHASE COUNT TOWARDS THE $50 SPEND?
Yes. Any purchase made at the resort will count towards the required $50 spend. Multiple purchases made in the same 24 hours can be combined, including purchases made at retail stores, spas and salons, restaurants, theaters, nightclubs and lounges, and all game play. Taxes and gratuities do not count towards the $50 spend minimum.
HOW IS A PARKING TICKET VALIDATED?
A parking ticket can be immediately validated at the outlet where $50 is spent, or by presenting a receipt(s) and parking ticket at the front desk, or at any Red Card desk.
IS A RECEIPT REQUIRED FOR PARKING VALIDATION?
Yes. A valid original receipt from a purchase made at the resort within the previous 24 hours of the validation request is required. No other form of proof of purchase will be accepted.
CAN A SINGLE PURCHASE COUNT TOWARDS VALIDATING MORE THAN ONE VEHICLE?
Yes. One purchase can be split among multiple vehicles. For example, if four visitors in four separate vehicles spend $200 before tax and tip at a restaurant, all four visitors will receive parking validation.
HOW IS PARKING VALIDATED FOR CASINO PLAYERS?
As always, a Red Card membership is required to track game play. Guests may visit the Red Card desk or speak with their casino host to confirm if the $50 spend for parking validation has been met.
WHAT ARE THE PARKING FEES IF $50 IS NOT SPENT AT THE RESORT?
For self-park the first hour is complimentary, then $7 for one to two hours, $12 for two to four hours, $15 for four to 24 hours and $15 for each additional 24 hours. For valet parking, the fee is $18 for up to two hours, $22 for two to four hours, $27 for four to 24 hours and $27 for each additional 24 hours.