I take the long way to Chau Doc (another Mekong Delta town) and spend the day there on my first tour booked with a tour guide. The tour is expensive and is much less fun than organising it yourself.
The day involves another set of floating markets, a fish farm, a trip to a Cham village and a walk in the countryside.
Sunset atop Sam Mountain, overlooking the Vietnam/Cambodia border, while sipping a Saigon beer and relaxing in a hammock is bliss.

Looks beautiful