hi, i just had my ROM, JP is mr. phang, yupe. he is a nice old man, he did the ceremony very short and fast. I'm agreed with midas, if you not a fussy person, he is ok. actually the most important thing is both of you how to treat the event.
Mr Phang didn't ask us to stand up while exchange the ring, but, me and my hubby stand up ourself and do it in our way.
so, i think you still can design what you want, and JP is just a person who read your vow, i think. so, don't worry, just enjoy yourself. the most important thing is Mr Phang was reached early before the ceremony start.