I'm sad to hear that, especially as SAC are supposedly trying to expand the membership. There was previously an issue with members of the competing flying school expecting to walk in and use the SAC club facilities for free, (whilst members have to pay to do so by joining the club). However, your landing fee, payable to SAC, allows you permission to use the restaurant. I would like to think that next time you will be made to feel more welcome or the club is shooting itself in the foot.