The aquarium is supported by tax dollars which come from a local taxing jurisdiction, the park district if I recall correctly. Why shouldn't the price be higher for those whose taxes don't support it.

Either way if I as a businessman decide to charge one customer one price because I like them and charge another customer a different price because I don't like them, (or for whatever arbitrary reason I think of) who is the government to say I can't.

Instead of complaining about the kama'aina discount, why not find a manager and say "I won't buy it at the regular price but I will buy it if you give me the kama'aina rate".

/pbz