This is a First World mecca, an oasis of large, industrial packaging within row upon row of foods, televisions, cleaning supplies and pharmaceuticals. The daring can search for the sample folks who can often be found within deeper crevices in one of the several isles.
Weekends are your folly. Unless you are looking for an added sense of frustration to mix with your adventure in large volume shopping, don't go on the weekend. In fact, the overall rating for this location should not necessarily be impacted as there is more than enough parking. The location is a draw for an enormous volume of folks which all arrive around the same times. If you know ahead of time that you will sustain a anxiety fuelled search for a space, frustration should not be taken on the establishment. However, if the folks of Cosco were to have parking attendants be out there during certain times on the weekend, clearing shopping carts efficiently and leading folks to available spaces where possible, it would be innovative response to the congestion. Think of Magic Kingdom and how traffic and parking is managed there. At all costs, avoid the weekend and go during a weekday.
Go with a budget and conserve enough time to navigate amongst the hundreds of fellow shoppers braving the experience. Afterwards, as you check out, reward yourself with a ridiculously low priced, calorie infused treat as a $1.00 hot dog/soda combo or ice cream. Something to have quickly before braving the exit lines and the mad rush for fellow travellers to take your parking spot.