Quite agree that hydration breaks should be had in hot locations.
It's 46°c where I am today, so I need to drink plenty of water even doing nothing really physical around the garden.
BUT if you are going to have these breaks, they should be held on the opposite side of the pitch to the team benches. It takes,seconds to put out a couple of tables for each team. Put the drinks on the tables, and leave the players to serve themselves.
A couple of games did change, due to the coaching talks from the coaching staff during these breaks.
Stop the coaching, but keep the breaks when it is hot enough to need them. I don't think Spain, Portugal or Morocco have air conditioned stadiums, so the need will be there.