We've been using it for a few months. It works really well and has been a great timesaver for my wife.
We've had a few missing items and a simple claim through Walmart's site gets us an instant refund.
Honestly, we probably won't be using it for a while because of the thing of which we do not speak.
I think your last sentence describes the reason more shoppers are using the service. Our Walmart nearby has 12 parking slots for pickup. Last Saturday every spot was filled with waiting customers and it appeared that there were four associates making the deliveries. Today I saw that four spots were being filled. It has definitely picked up.
Yeah, I understand why it appeals to folks right now. I completely get it.
The reason we won't use it is because of the lack of stock on the shelves. In the past, generally when using the service, you get what you order. Sometimes there are substitutions.
My guess is that there are tons of substitutions going on right now. Sometimes they choose appropriate substitutions, sometimes they're head scratchers. My rationale for entering the store right now is to more tightly control any substitutions and have more options than "out of stock".
We also live in a rural area. Walmarts out here are not as crazy as in other, more populated areas.