I did not understand why Ep. 11 stuff was doing in Ep. 12 when I reponded earlier. Well, the joke is on me because it really was an Ep. 12 question. Here is the answer:
The Guam pistop has to be 12 hours. Teams will arrive whenever, but nothing will happen before about 0600 Dec. 15 because that's first reasonable light on Guam (I should know; I was just there and on April 23 it was black at 0530 and at 0602 the sun came up quickly; this is typical of an island near the equator). Teams have to finish sometime after about 1700 because if they were at the pitstop sooner they would be able to make CO 2 nonstop to Honolulu departing 0600 Dec. 16 and arriving 1705 Dec. 15. We know that this does not happen. On release from the pitstop on the mornning of Dec. 16 on guam, teams may elect to make phone reservations or visit a travel agency, we don't know. They do show up at Guam International Airport for ticketing (and maybe for reservations) and for changing those tickets in the case of the "demanding blondes". D/K and E/D go to Northwest, appropriate since they are the carrier, and C/M for unknown reasons go to Continental.
NW 81 and NW71 leave at close to 4pm and arrive in Tokyo-Narita around 7pm (see my earlier popsts for specifics). NW10 leaves NRT 2030 and arrives HNL 0825 on Dec. 16. That leaves the entire day for Hawaiian tasks before teams need to be on planes for SFO by 10pm.