Hi, I have invited friends and families to come see our new house, sort of like an open-house day and people can come any time in the afternoon. I would like to have appetizers and snacks ready for everyone. I think there would be about 30+ people in and out during the day. I have never made that much food before. Should I just get trays of stuff from gourmet grocery stores? Any suggestions on appetizer type things that I can make in advance. I thought about making dips but I don't have a food processor. I am quite stumped.