Alright everybody pile on. Lol. I think it's funny how most Internet forum "discussions" go. Maybe I'm not very good at translating my thoughts into forum post. He should absolutely do what he feels is right. When i say most people should not have the opportunity to think about the issue. I'm saying it would be better to leave the law as it is currently written which in my opinion says that the OP does have the right to carry while chaperoneing the trip. If it were discovered by the public that their is no law that says he can't do that I believe there may be quite a few people that would want to change that. Remember the only reason something is legal is because a law hasn't been passed to make it illegal. I'm saying he should do as he sees fit just don't promote it to the point it brings unwanted attention to a law that at the moment is on our side. I also think it would be extremely naieve, given the current political climate with school children and guns, to think that if this issue were brought to the eye of the news outlets that we (pro 2A people, yes I am one) would win the ensuing debate. I doubt this will clear anything up but I tried.
I do see where you're coming from.
Really, though, this argument isn't any different from the general "OCing will get OCing banned" argument. After all, there will be children at the aquarium regardless of whether it's during a field trip. In fact, there can be expected to children (at least with some probability) nearly
everywhere a person might choose to be armed. Heck, some might choose to be armed
especially around kids they feel responsible for, kids being otherwise defenseless.
Most of this forum have had a lot of time and discussion to ponder this issue. Most of us have concluded that, on the balance, open carry can only serve to benefit open carry.
The very motto of this site, "A right unexercised is a right lost", was created as a continuing rebuttal to your argument.
Try not to feel too "piled on", though. Considering that most of the forum agrees with the above, it's not surprising that you encounter lots of disagreement. That doesn't mean your opinion is unwanted, or that we don't consider discussion of the matter important all the same.