PharmZimbo, I seem to remember about 25-30 of us being there. We started out in an auditorium and then broke out in to groups. Not everyone does the same thing at the same time. Some interviewed first while others completed the essay, etc. I do not know how many groups there were, but we all had an interview, essay and tour of the college in varying order before gathering for the reception.
My experience in regards to the interview and essay is that they were very straight forward. I did not get any crazy/off the wall questions like, "why do you think a tennis ball has fuzz". Please keep in mind, because I didn't get anything unexpected, doesn't mean someone else didn't. I know we all have to use discretion in our responses here, but maybe others can respond if they had a different experience in this regard. I can say this interview was more straight forward than a number of job interviews I have had.
Please do not do what I did. I was sooo nervous I didn't sleep the night before the interview, and I am sure I stuck my foot in my mouth more than once out of being nervous. My recommendations are the same as what I described in a prior post. Try to relax and be yourself. Show your enthusiasm for the program. Think positively. Do not defeat yourself before giving yourself a chance to succeed. Again, relax. I would also suggest that you review your original application and the link JessicaB provided earlier and HobbitJane just referenced. Preparation is a great confidence booster.
Best wishes to everybody who is still needing to interview! Heck, best wishes to everyone who is holding their breath until this is over!!