We used to have this. I thought it was binned / suspended a while back due to the changes in the ticketing software, but to be honest I may have just imagined that.
Platinum membership wasn't an away season ticket though - it was an add on to the home season ticket ( gold membership ), so not...
'Loyalty' points were a really stupid name to choose.
Time for the club to decouple the concept and implications of loyalty and to rename the points as 'seagull points' or similar.