You take real care eating. I cracked a filling a couple of days after my piercing while I still had a long barbel. The danger time is when you think you've got the hang of it, just like skydiving I guess.
Enjoy it, its worth the initial aggravation. I'd avoid listerine, or other alcohol based mouthwashes. Rinses of heavy concentrations of salt water kept me clean and I brush the barbel just like I brush my teeth, keeps it sweet.
Rice is good.
A couple of days ago for the first time in years I ate a boiled sweet. The damn thing stuck to the ball, like they can sometime stick to your teeth. Only I couldn't get my tongue round it. I was in company at work so I couldn't grab it with my fingers. Took me ages to shift the sucker!
Oh, and during early days, don't let anyone apart from your piercer touch your ball. People (even loved ones) have a habit of pulling way too hard.
Hope you enjoy making impact - you will, happy holiday.