Crowded and hard to find parking. Watch out for all the pedestrians that make it seem like they just learned how to walk as you search for a parking spot
Don't come during the holiday season. Way too many people, especially SLOW old people. Surprised no ones been injured in the clash of walking daydreamers and rushing young families.
If you are buying contacts, be sure you have your costco card because they will not even FILL your order unless you physcially have the card and your name is on it. I tried to take my mom's with me on
If you buy contacts make sure you are the one who owns the card. I tried to use my mom's and the tiny chick who works there kinda got rude with me about it.
Parking is horrible, the customers are selfish a holes. The line are way too long and slow. Checking out and in, is the worst idea. Save time and money go somewhere else!