First l should say, I am not a cruiser.
However, In April I had the pleasure of boarding the MV Mahabaahu for an expeditionary adventure cruise down the Brahmaputra River and I loved every moment.
The Mahabaahu has cruises available up or downstream; My choice was 8 days downstream from Jorhat to Guwahati and I discovered the necessity for the cruise vessel to be accompanied by a pilot boat which navigates safe passage on the fast-flowing Bramhaputra River with its ever changing landscapes and shifting sands. It is fascinating to watch this progress with the Captain from the wheelhouse.