Hopefully, this is not a question from a lazy OP, as I do try to understand lounge access rules.

However, I have not spent any significant time at NRT and none at HKG or CEB and am sending my "no FFP status" brother through those airports on a roundtrip. If you would share your opinion on which lounges he can (based on cabin) and should (based on quality or time on ground) try to access given the flights below it would be much appreciated.

Thank you in advance!

DEPARTURE
AMERICAN AIRLINES (FIRST) - 61
DFW Day 1 01:20 PM
NRT Day 2 04:15 PM

JAPAN AIRLINES (BUSINESS) - 735
NRT Day 2 06:15 PM
HKG Day 2 10:00 PM

CATHAY PACIFIC (BUSINESS) - 921
HKG Day 3 08:45 AM
CEB Day 3 11:30 AM


RETURN
CATHAY PACIFIC (BUSINESS) - 920
CEB Day 7 12:30 PM
HKG Day 7 03:10 PM

CATHAY PACIFIC (BUSINESS) - 524
HKG Day 8 01:00 AM
NRT Day 8 06:10 AM

AMERICAN AIRLINES (FIRST) - 176
NRT Day 8 11:30 AM
DFW Day 8 09:15 AM