Part of the reason this conundrum exists is documented in the book Zoo Nebraska by Carson Vaughan. Back in the early 2000s, Zoo Nebraska (a small now defunct zoo in northeastern Nebraska, almost 3 hours from Omaha) entered into reciprocity agreements with other zoos in the area, including Henry Doorly Zoo and they offered free admission to zoo members. Doc Simmons was a huge proponent of small zoos and was supportive of helping others out.
However, this backfired on Henry Doorly because the cost of a membership to Zoo Nebraska was super low compared to Omaha, and in the online age, of course people took advantage. Zoo Nebraska had a marketing campaign that stated members would get in free to Omaha's Zoo, so naturally tons of people started buying Zoo Nebraska memberships. Zoo Nebraska's memberships swelled to more than 20,000 members, with half of those members having addresses in the Omaha Metro area.
Becoming aware of this, Henry Doorly dropped their reciprocity agreement with Zoo Nebraska in 2004 because they were losing money from their own member-base to a place that most of these "members" would never visit in their lifetime.
I'm almost certain that this event had a lot to do with the "close geographical proximity" wording that AZA has.
Now whether you think Omaha was being greedy in this situation, remember that this zoo started going through a massive transformation at this time as the Desert Dome was starting to come to fruition and opened in 2003, with many more major projects following. A loss of 10k members from your base is a huge loss that could have put of lot of Omaha's eventual projects on the chopping block if the trend continued.
However, this backfired on Henry Doorly because the cost of a membership to Zoo Nebraska was super low compared to Omaha, and in the online age, of course people took advantage. Zoo Nebraska had a marketing campaign that stated members would get in free to Omaha's Zoo, so naturally tons of people started buying Zoo Nebraska memberships. Zoo Nebraska's memberships swelled to more than 20,000 members, with half of those members having addresses in the Omaha Metro area.
Becoming aware of this, Henry Doorly dropped their reciprocity agreement with Zoo Nebraska in 2004 because they were losing money from their own member-base to a place that most of these "members" would never visit in their lifetime.
I'm almost certain that this event had a lot to do with the "close geographical proximity" wording that AZA has.
Now whether you think Omaha was being greedy in this situation, remember that this zoo started going through a massive transformation at this time as the Desert Dome was starting to come to fruition and opened in 2003, with many more major projects following. A loss of 10k members from your base is a huge loss that could have put of lot of Omaha's eventual projects on the chopping block if the trend continued.