Luggage and bags:
Pack Light because you can buy things that you need over there for pennies. If you must bring clothing make it mulitpurpose like cargo pants. April was hot so you could pretty much wear a tee shirt and shorts all day. Oh, you also need a hat but you can buy those on the street.
Clothing/Shoes/Weather Gear: I wore sandles all the time. Too hot for socks
Photo Equipment: APS film is a little difficult to come by except for the major tourist traps.
Pants, shirts: Nylon.
Patagonia is always good, but pricey.
Caution: Cotton absorbs moisture, and moisture happens alot in VN.
Toiletries and Medical Supplies: Sunscreen.
Photo Equipment: Lead bag for film, which you want to buy at home, develop at home. Bring a digital for snapshots.