well i'll actually be nicer than you about that contract and commitment thing:
everything should go fine if you just have the standard SRS, as in this case, Sophie will only manage bookings, and you will have everything you'd expect ,
if you need anything more, then things can go wrong, if you asked something to sophie before arriving in thailand, then the clinic will not be aware of it and even ask you to show them sophie's mails, if you need a correction, there again the clinic will not know anything else than your planned surgery date, and perhaps some vague indications, no matter how many pictures you sent or how many specific details you mentionned
and that's about it, those who have a nice result right away without the need of correction will have the happiest experience indeed

those who come back for a SMALL and basic correction will also have a totally positive experience, i think
however , keep in mind that results greatly varies among patients, and if i learned anything, it would be that Suporn isn't too comfortable if you have too much material, other than that, if you properly do your postop care, it's all smooth