By DENNIS WYATT 209 Living Joann Beattie plans to be rocking around the Christmas tree when Dec. 2 rolls around. That’s when the Manteca Chamber of Commerce — the business organization Beattie oversees — is partnering with the city to give the community gift: Christmas in the Park. It’s a two-day Christmas celebration at Library Park in downtown Manteca on Friday, Dec. 2, and Saturday, Dec. 3 that includes: *ice skating. *eight food vendors both days with craft booths and more on the Saturday. *a Christmas tree/scene decorating contest. *a rock band on that Friday playing rock classics along with Christmas favorites such as “Rocking Around the Christmas Tree.” *carolers. *”reindeer rides” from ponies decked out for the season. *continuous entertainment that Saturday. *the chance to meet and have photos taken with the Disney princesses that Saturday.