Flew GUM-MNL a couple of times this year, once in coach, once up front. It's a very quick flight, under 4 hours IIRC, so you won't get much sleep on the MNL-GUM leg.
Pretty much standard CO aircraft. Now if you are going to fly via Hawaii, the cabin up front is different from a BusinessFirst on non-Hawaii routes. Just do a search, and you'll get an idea.
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