Fun fact, in the book Jurassic Park and in the initial script, there was a river boat sequence. It was extensively planned in preproduction and teased as part of the plot. This was spread to the other ‘tie-in’ merchandise and park ride. This is why the universal studio ride is a water ride and why games that timed their release with the movie had river sequences. But as we all from the future know, it never happened. Budget overruns and shooting delays lead to script rewrites to cut out that sequence.