Was there a few times this month (2xA and 2xB). I haven't noticed staff service standards slipping, by and large I find them quite efficient and friendly, and didn't get the impression there were less. However, I do find the service standard of the a la carte food items has been gradually going down, and they seem to run out of one or the other items more frequently (today I was surprised it was the (admittedly sushi) rice they serve with the dashi salmon main course).