Nope. That is definitely the canal connecting Bay lake to Seven seas. In this picture the man is standing on the contemporary side the LB is heading towards seven seas. One give away in the manicured grass and another is The monorail pillar, that is not a pipe on the side it is a slot because it is actually a double pillar and this is only done at this monorail water crossing. Slighty ahead of the castway cruise, and to its right, you can see the wind sock and the hard sides, and the hand rails of the canal water bridge that World Dr. passes under.Here's my support for its location and direction. In the below pic. The blue oval is the monorail beam at waterbridge by Contemporary. Red oval is the monorail pilling fender. The waterbridge has an S curve in it. instead of the straight shot. The yellow oval shows the tow strap attached to SSL Cruiser Boat, specifically Castaways.
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Canal on west end of SSL. Same fender shown protecting monorail beam pilar.
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East end of SSL at Waterbridge showing no wooden fender for Monorail Beam Pilar.
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If the LB was going out to Seven Seas from the back stage access canal, that would mean the man is standing on the west shore line, and there is no manicured grass on that shore line.
On your red circles, the wooden barrier is on the LB Port side, what would be she is heading into the backstage canal or from Bay lake to Seven seas. This picture predates your google map 2018 picture. The waterbridge canal use to have a wooden barrier protecting the monorail pillar, it upgraded in 2016.