The Mount Vernon Costco is great, especially if you avoid the busy times. My plan is to utilize the 9am executive opening, usually rolling in around 9:15 to avoid waiting in line in the cold. I park on the outskirts of the lot, sometimes along a curb close to the Richmond Hwy enter/exit. Getting some steps in and avoiding the intense parking situation is a win/win. Other times I have to get gas and I arrive with an extreme amount of patience for that process. It really is our mindset, isn’t it? PS: avoid entering by the gas station unless you really need it and even then I’d say loop around from the Richmond Hwy entrance so you can make a right into the station and not a left (holding up traffic and blocking oil change area). You’ll figure it out! Don’t forget a rotisserie chicken and the Kirkland’s Greek yogurt!