I went yesterday evening for a dinner cruise aboard an old rice barge that was restored for this kind of dining cruise.
It starts from the Manhora Cruise’s Pier at the Bangkok Marriott Resort and goes up the river while you eat.
The barge can accommodate about 40 guests only and the food is quite good but I find the price a bit steep (Baht 2000/adult). I personally prefer to rent a boat, my main objective being taking photos, not really eating but it is probably a nicer experience if you do it with your family or wife/girlfriend.
I anyway took a few pictures, not really as nice as I would like them to be since I was stuck on my seat. The photos were taken with the Canon 7D and the Canon lens 50mm f1.4 at f1.6 or 1.8, ISO800, 1/80 or 1/100s.
There are many temples along the river, here are two of them
And also a brightly lit white church
And the Temple of Dawn