So I've booked a trio for next month - 2 hour session. It's obviously the more expensive of sessions I've had previously, so I want to make sure I make the most of it. Definitely want to finish with 3-girl OWO, but beyond that I'm not really sure what to request 
Anyone had a trio before and can suggest ideas?
I am going to ignore the attention seeking nature of the OP and give a proper answer.
First of all you should know that the more girls you employ the worse value for money you get especially if you pay their full fee (as you do). My own record is an FFFFM and if I could go back in time I would choose to do two duos or four consecutive solos instead. I have done quite a few duos (FFM) and some trios (FFFM) and I always try to engage all the girls as much as possible but in general beyond duo such engagement becomes slightly challenging. Anyway here are a few ideas for your FFFM other than the uninspiring triple blowjob:
(i) Daisy chaining: alternating face up/face down positions forming a circle so each 'chain' gives and receives oral. Due to the number of girls (3) one girl will be totally not dealing with you but you can swap the ‘chains’ …
(ii) Lay on your back and have a double blowjob by A and B (one also playing or sucking your balls) while C is facesitting you for cunnilingus or queening. You can swap the queen. Also same position but instead of C facesitting you, doing something else e.g. DFK you or bury you in her tits. Or have only A doing the BJ and the other two (B and C) in your face either for alternate fk or with their tits or dirty talking.
(iii) Lay on your back with A doing cowgirl/reverse cowgirl, B face-sitting you for cunnilingus while she is FKissing C. Swap the cowgirl (from A to C).
(iv) Fuck girl A in mermaid missionary, have girl B facesitting girl A for RO and you DFK girl C – the facesitter (girl B) can also arch back to DFK either you or C or have the face-sitter (girl B) looking towards you and DFK girl C.
(v) Have two girls (A&B) in 69 under the legs of C who is then sits on her knees over them. You on the edge of the bed alternating between mouth-fucking A (OW) and fucking B’s pussy and have C DFKissing you.
(vi) Fuck A in doggy, while A licks B while B gives oral to C. (easy and a must try position)
(vii) Have two girls (A and B) lay back next to each other with with their legs up. You give oral to A and girl C gives oral to B while you finger C from behind. You can also stop for DFK with C every now and then. Also A and B can turn their heads towards each other for fkissing
(viii) Have girl A lay on her back and A lay on top of her. Fuck B in the jockey-doggy position. C can give a nice show with her body or FK with you.
(ix) There are many other positions especially with one or two girls wearing a strap-on in which case FFMM positions can be employed like DVP (double vaginal penetration) with the penetrated girl A do cowgirl (reverse missionary style) on B (who is at the bottom) and you entering A in doggy. Have C doing a show or FK girl B from the top.
(x) Other finishing positions than the triple owo can be one girl (A) wanking you on the others’ two (B and C) mouths, faces or tits and then A licking your cum from A and B tits/faces. Well be imaginative…
Anyway these plus the triple BJ should be more than enough for a 2hr session. Obviously with drawings it would be easier to explain and you to understand but I hope the description somewhat helps (perhaps you may need to read it twice if you got perplexed). The girls you selected are top individual performers and the FFFM with them is going to be fun but a bit of a waste of money imho. If I were you I would only do FFM with the two followed by a GFE solo with the third. You definitely need to meet Adele alone for a 2-3hr solo.
