My favorite dip is sour creeam , dry ranch dressing packet, and reg. cottage cheese. It is chunkier than the regular ranch dip and I think it more satisfying.
I tend to think when these parties are going on that I would rather have my hands free while listening to a salesperson so I can follow along in the catalog or jot down a note if I especially like something. So I would say that breaking it up a bit would be nice. For example: Welcome everyone as they come in and point out the refreshments and tell them "we'll be starting in X/? minutes, feel free to visit and try some food" then give them a chance to eat more after the presentation.
Good luck on your new business.
P. S.
Where are you located and how many will you be serving because I have tons of horsd'oeuvres and also appetizers, most of my horsd'oeuvres recipes are for 100 because I am usually on the activities committee in my ward at church. Of course they can be cut down to smaller groups. I would be glad to share recipes with you if you want.