I will never shop at the Ottawa Wal-Mart store because it is not uncommon to have 5 and 6 deep and wait sometimes 10min to checkout. I run into many who will not never shop at Wal-Mart again.
Making people wait to checkout is the quickest way to star losing many customers.
Maybe you need to go over to Hy Vee in Lasalle they will open a checkout whenever they see 2 people waiting in line. I have run into other stores where they have a couple people waiting g an someone will comment it reminds them of Wal Mart and they say they quit shopping there.