I don't know that I'd spend the whole day in a museum - either you'll be pissed that you missed seeing some other things or you'll be anxious to rush through the exhibits and later you'll feel like you wasted your time doubly so.
Definitely do not eat a space cake or toke up late in your visit if you plan to get back to the airport.
If they're still around and you can time it right, Mike's Bike Tours (I'm sure there are others, too) is a pretty relaxed way to get around, take some photos, see the sights, and maybe stop in for a beer at the end. You will probably hit the major highlights, which is about what you can expect in seven or eight hours anyway.
Definitely do not eat a space cake or toke up late in your visit if you plan to get back to the airport.
If they're still around and you can time it right, Mike's Bike Tours (I'm sure there are others, too) is a pretty relaxed way to get around, take some photos, see the sights, and maybe stop in for a beer at the end. You will probably hit the major highlights, which is about what you can expect in seven or eight hours anyway.





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