Opening Ceremonies Standard Format:
"Welcome to <Convention>!"
Introduction of all Important Guests to Audience
Housekeeping (Go over some basic Con Rules, important little tidbits of information that directly affect the convention, etc.)
Advertise all panels of importance
"Thanks for coming to Opening Ceremonies, please enjoy the convention!"
Closing Ceremonies Standard Format:
Re-introduction of all Important Guests to Audience
Housekeeping (Important tidbits not covered by opening ceremonies, survey info, etc.)
Announcement of Next Year's Date (and Theme, when applicable).
Convention Feedback
"Thanks for coming to the convention! See you next year!"