I don't know if this counts as crazy, but here goes:
This was a few years back. It was our wedding anniversary and on the same day we had an early morning flight to attend a family function. Since I knew once we reached we would hardly be able to spend any private time together, airport would be the only place where we would have some time. So here's how I used the AMEX concierge (through my Plat Reserve):
- Asked them to coordinate with the AMEX lounge at New Delhi T3 to reserve our table (my wife does not have an AMEX card)
- Asked them to arrange for a flower bouquet and a cake at the lounge
- Sent them some of our pictures to get a photo album printed and get it delivered to the lounge (I had shared some 100 pictures with them to get a 36 page hardbound album printed, with photos to be in a particular order, some pages with a collage of specific pictures and each page to have a specific caption)
They did all that! Did require some coordination but they were super professional and communication at all stages from them was extraordinary. They waived off the guest charge for my wife's lounge access as well. They did mention that there might be an issue with airport security to get the 3rd party vendors to deliver the album, cake and bouquet to the lounge, esp. the album. But they handled it all and it was all at the lounge on time (we were at the lounge at 5:30 am!).
I guess those days are past. Recently, I have struggled to get even basic travel bookings done through the concierge. Also, had a bad experience with the AXIS bank and VISA concierge earlier this year where they messed up on my hotel booking.