I can’t confirm that you will be able to get a quota / high demand bag from Harrods but I’m in the same place at NBS (approaching 2 years, similar spend and a good relationship with my SA) and I haven’t been granted a wish as yet. Therefore, moving your spend to another store may not make a difference if you’re otherwise happy with the service.
As
@maxroxxherhandbags said, big bags are quite hard to come by right now. My first wish was a B35 and when it expired my SA said it would be very hard to get one so I changed it to K28, that too expired. The stores just don’t order the bigger sizes as there is little demand for them, it would seem.
Some threads mention that SAs can see what bags are coming in subsequent shipments. Curious to know whether there is any truth to this and whether SAs can see if there are any larger sizes coming any time soon. Surely they could find out what’s been ordered at Podium if they wanted to?