Noticed this yesterday MCO-ORD on a PMCO 737, we were delayed in boarding due to late inbound aircraft. The "hurried" boarding process meant that we did not get PDB at all.

They didn't get up to take drink orders until nearly at cruising, and took them alongside lunch orders. Still brought drinks out separately with nuts but I'd estimate we didn't have our first drink until being on board for nearly an hour and a half.

Contrast this to what was probably the BEST service I have had in domestic F, on the way down on a 757, where drinks and dinner orders were taken on the ground (and got a PDB) and served drinks almost immediately upon it being safe to do so. Served a double without asking. When I asked for seconds was also served a double. Decided to have "just one more" about 45 minutes prior to landing and was given not only one more but 3 for the road.

Lesson learned: if you want me to perceive your service as memorable, liquor me up! Well, but not too much or I might forget the whole thing.