hi there,
busch gdns is just over an hour away and is very straightforward to find. We did visit it the last time we went as it was included on our flex ticket, but it is certainly worth a visit if you dont have a flex ticket. there are some great rides there and shows too. the only downside is on a hot afternoon all the animals seemed to be asleep in the shade and not doing very much (sounds good to me!!), but i am sure you will have a great time.