Saigon Maximark U-Max Membership
I visited Maximark last Sunday. Normally I avoid the place since it is too crowded and the checkout lines are normally packed. It can take anywhere from 10-15 minutes at the LEAST to get to the checkout stand. Normally you have to fight to keep your spot from shoppers trying to cut in.
When we finished shopping, we went to the checkout area. I saw five that were relatively empty so we entered it. When we got to the cashier, she said we could not use it since we were not U-Max Members. It seems U-Max members can use the 'Express Checkouts' while normal shoppers had to wait in the other lines.
I then said that I would pay for the membership fee now. Citimart, in the past, and Co-op allows you to pay a membership fee at the checkout. No response and we were asked go to another checkout.
After about 15-20 minutes I paid for my groceries. I will stick to buying all of my groceries at Big C from now on. Their checkouts are much faster.

(U-Max Express Checkouts)

(U-Max checkouts are faster, most of these people are not members and joined us later)

(Normal checkout, very crowded)