A minor addition to the Feeesh's agenda and notes, in case anyone is
interested:

The Aquarium visit is scheduled for after lunch, and if the schedule
hasn't changed since I was a volunteer diver there, we may be able to
catch the feeding in the Nickajack Lake exhibit (freshwater) by divers.
Nothing terribly fascinating about the fish, but there are [were?]
several ducks in the exhibit.  If you've never seen a diving duck, this
is your chance.  Sometimes they'll make a 10-15' dive for handouts when
you least expect it (when you're feeding the fish at the time, not them)

The Gulf of Mexico exhibit, the only saltwater exhibit of significant
size, gets its feeding around 10-10:30.

Times may vary, or as Feeesh says, the schedule is on "Mexican time".

Jeff