[aceyx]

A word of advice: don't try to steal the penguins. They'll ban you from the premises.

Two other things I remembered: Try and check out the light show at the old strip. Just check out the old strip itself, much easier since you'll be driving. Old Vegas and new Vegas are like night and day.

Since you're with your fiance, maybe do a gondola ride at the Venetian. Earlier in the day is better (fewer gawkers, shorter line). They'll sit you with others unless you get a private boat, so don't be afraid to approach (non-weird) people in line asking if they want to share. If it's not your cup of tea, you're not missing out on much if you skip it.