I went with the full service cuckold also, even though I'm not so hot about getting ass fucked.
It just seemed to be the closer type as to just sit, watch and give oral service didn't appear to include the truest parts of being a service oriented cuckold: making snacks, serving refreshments, cleaning up, changing the bed linens, etc., as well as providing the more expected sexual services such as fluffing, inserting his cock into my Wife's cunt or ass, licking her clean afterward, etc.
I imagine that if he really wanted it and it would amuse her to watch me submit to it, I'd be getting butt banged as well.
will