Ask after the meal, not during it
Requests sent while guests are still at the table compete with the experience you are trying to be praised for. Sending an hour or two after the bill is settled, or the following morning for late covers, catches the reflective moment and produces longer, more specific reviews.
Quiet hours matter more here than in any other trade: a message that arrives at one in the morning reads as intrusive. KundPulse holds anything falling outside your chosen window and releases it at the next reasonable hour, so a late Friday service is asked on Saturday morning.