How strict are they? We're a family of 4 with a 10 hour layover in Incheon. One of us has PP. We are flying OZ, but our reservations are split 2-2 because of how they were originally booked.

We don't expect to be in there the whole time, or even more than a few hours. Just want to get a sense of the busiest times and whether all 4 of us can get in with the PP (Chase Sapphire Reserve which allows guests with the PP holder I believe).

Better to take a shower in there, or use the public one? Any chairs that would allow for a decently comfortable cat nap?

What kind of food is there typically?