I'll be leaving Kona, HI at around 10pm on Friday en route for London with a connection in SFO. Is there any way to get a shower at SFO (or KON)? It's a long journey (~23hrs) and I'll have had a day in hot Hawaii before I even start! I see SFO's website says showers are currently unavailable, do any lounges (that I can buy access to) have them?

Thanks!