Is it allowed to take pictures inside the aquarium? I just checked Chicago weather, it is going to rain heavy tomorrow Sunday Nov 4th, is it a good idea to visit on such a day? How much is the parking? How much is admission fee for adults? TIA

Yes your allowed to with no problem. Parking cost around 20 bucks. Also amission is 40 per adult if you don't use a chicago zip code at counter.

I think we paid $ 28 per person. Parking we did not use Photography was not prohibited

We took pictures. Rainy days might be busier. I cannot remember parking or entrance fees. That's available on website. Kids loved it!