The flexibility rules ending means border agents will be doing more thorough checks, so you're looking at longer waits especially during peak travel times. the schengen area used to have some relaxed procedures that let things move faster, but once those expire you'll need valid docs checked more carefully - passports scanned, questions asked, bags potentially opened. if you're heading to france, spain, italy, or anywhere popular in 2026, budget maybe 30-45 minutes extra at borders depending on the crossing. busy airports on weekends will be worst.
the practical stuff: get to the airport earlier than you normally would, have your passport and any travel documents ready before you hit the queue, and skip the rush hours if possible. flying mid-week or early morning hits way fewer crowds than friday evening. if you're driving across land borders like into germany or the netherlands, expect similar delays at checkpoints. some crossings handle it better than others though - smaller border posts move faster than major highway ones.
honestly it won't kill your trip but it's annoying if you're tight on time. just factor in buffer time and you'll be fine. the eu isn't suddenly shutting down, it's just tightening things up a bit after letting rules slide for a while.