Holidays advice/tips

Hi all

I've beenworking too hard for a while now so decided to get myself out and about. I'm off to Lisbon in 2weeks for 4nights with some mates and then off to Vietnam and Cambodia for most of May.

Was just looking for any tips/advice from anyone that's been to these places really.

First off, Lisbon - going with 3 other guys and staying in a hostel that's fairly close to the centre (i think!). We haven't had a chance to look into what's hot and what's not there so was wondering whether there are any 'must sees' in terms of sights, culture, food/drink, clubs and nightlife??

Second is the big one to 'Nambodia'! I'm flying into Hanoi with a mate and going on an 8day m'bike tour around the north, up to the chinese border and taking in Cat Ba and Halong Bay, etc...promises to be amazing! After this however my mate is heading home to Singapore and I'll be on my own for the next 2weeks. My plan was to travel south towards HCMC and then over the border into Cambodia to Siem Reap and Phnom Phenh (this is where I fly back from).

Cambodia is straightforward as I really just want to visit Angkor Wat and PP. Vietnam is simple I guess as I will just travel North to South but I was wondering again, is there anything I should definitely do/see on the way??

Any help is much appreciated!!

Cheers

Vig