I always use online. I started using them just at Christmas and did that a couple of times because I hate that last minute Christmas rush when the shops are busy and you need cranberry sauce
Then Asda did all that messing around with the car park and instore that I started using them every week or so. Now I use it every other week and go to the Co-op for bread and a few fresh things every other week.
In fact, just reminded me so I might go to Asda now for delivery on Friday.