Not a good idea to limit fluid intake but I weigh up the negatives (weight penalty, bottle dropping and taking me/others out, shit all round the spout, having to clean it all) and ask myself if it’s necessary for a 2 hour blast which, on a club ride, means 1 hour of riding and one hour pissing about.
Of course a camel back stops some of those issues but they’re still a pain in the arse to clean. I’ll stick with post ride beer unless it’s an epic ride somewhere far flung, in which case it’s port and brandy in the hip flasks.