Cocktail hour and appetizers

Hi all!
So my FH and I are having a debate as to whether or not we need to serve appetizers during our cocktail hour. I am for it, and of course he is saying it's unnecessary because the cocktail hour is for people to drink. Our ceremony is scheduled for 4p, and we expect it to go no longer than 30 mins. So ideally, the cocktail hour would be from 4:30p- 5:30p (while he and I do photos). At 5:30p, our family style taco bar would open up for people to eat. Now, mind you, we are having a photo booth and are asking each person to "sign" our guestbook with a picture they take in the photobooth during this time (we know this can be time consuming, and cause a backlog of people, so we figured it would be better to do during a "downtime"), so it's not like they won't have something to do. We will serve both alcohol and no alcoholic beverages during this time. So, what does everyone think? Are appetizers needed, or no?