Here, the felucca (Nile sailboat) pilots gather, trying to sell an afternoon or sunset trip on their graceful craft, and Nile Cruisers lie several abreast, disgorging their passengers for tours or shopping trips.
This is the only place in which the pilots of the Nile sailboat assemble. 
mnli hypothesis: This is the only place in which the pilots of the Nile sailboat assemble.  premise: Here, the felucca (Nile sailboat) pilots gather, trying to sell an afternoon or sunset trip on their graceful craft, and Nile Cruisers lie several abreast, disgorging their passengers for tours or shopping trips.