Tbh it’s pretty easy, just tedious and you can’t fall asleep. The duck walk was probably the hardest for me, everything else was pretty straightforward. The medical history form you filled out before going to Meps is the same question they’re gonna ask you, at least that’s how it went for me. As long as you don’t have any serious issues in the last couple months you should be fine. I didn’t have the old man but instead had a woman and a male chaperone. Oh, and those 18-19 year olds are probably gonna piss some people off as they can’t follow directions or be silent when told to.