Originally Posted by
dsquared37

I'd recommend Laos over Siem Reap.

Seriously? You'd go to Laos and not Angkor? Get to Angkor before it all falls down. :-)
But I am also curious. You are going to BKK but then instead of being in BKK you are going to ditch it for Laos or a cruise? This doesn't make much sense to me. You could easily spend a whole week in BKK and/or do a few day trips out of the city.