Are outside drinks (water or soda is what i am asking about) allowed inside? Didn't see a concession stand on the map but i am also not great at reading maps online sometimes

I believe so. There is not a concession stand nor are there designated eating/drinking spots so maybe you cant. They do have water fountains by the bathrooms though

ln short no.You can't have them in the actual museum part of with all the artifacts and exhibits. But there is at the top a like dining area next to the play place but it wasn't open when I visited.