You called it. One step at a time. It may be one *excruciating* step at a time...but before you know it you'll be through it and it'll all be over.
And yeah. No matter what happens, they will love you. That's my default safety mechanism whenever I'm worried about if I'm going to freak out, have a panic attack, lose my mind, fail at something, embarrass myself, etc. I just have to remind myself that 99% of the people there will be more concerned about my safety and well-being than how dumb I looked or how out of control I was.
Hopefully you are able to have fun today. Let us know how it goes.