The port (container port) is a good 2 1/2 hours away from Bangkok.
We liked the tour and the tour guide. Everyone even got to ride in Tuk Tuk's. Lunch was included. Very nice restaurant where we all got to taste delicious Thai food. The temples we saw were stunning.
Downside: At the end of the tour you get dropped off at a jewelery factory where they try to sell all kinds of jewelery to you. I would have rather spend my precious time at one of the famous sights in bangkok than listening to a sales pitch.
Loved this tour!!! It takes about a good 2 hour bus ride to get to Ho Chi Minh City, but the ride is very interesting. You drive along some rice paddies and see the locals (who were all very friendly and waved at us) on their mopeds.
The tour guide was very good. Very informative. We saw a lot of interesting things. Lunch was included and was the most delicious meal we had in those 14 days of the cruise. I highly recommend to take any tour in Vietnam.