Agree with the comments saying ask to be given access to F lounge. I had this happen a few years ago on a missed connection in J meant a 9 hour wait for the next flight. I asked for F lounge and after a few phone calls i was happily provided. It really did make all the difference. Much quieter, place to sleep, nice shower, a la carter dinner, and the 9 hours flew by. In your position i would even consider paying for access to F lounge