From my experience you can never tell someone, “Don’t EVER do ……..”. cuz you know what? We are all so different and especially in this area of shidduchim does this show even more. What works for one, may not work for the other. I sincerely think that in shidduchim you must be yourself, let your guard down, and think for yourself- don’t listen to others how you must think, feel, do, not do etc.
If you hate lounges don’t go to a lounge! If you feel like the date should go more for 40 minutes and having a great time go ahead! This is your life and no one elses. you need to do what works for YOU.