Friday & Saturday, May 13 & 14:  Big Island Chocolate Festival: Lavalicious - A Chocolate Salute to the 100th Birthday of Hawai'i Volcanoes National Park. The Festival includes a cacao plantation tour at Original Hawaiian Chocolate Factory on Friday, 11 a.m. to noon; a college culinary competition and several public foodie and agriculture-themed seminars. Activities culminate with an indoor/outdoor festival gala on Saturday at the Hapuna Beach Hotel. Enjoy music, dancing, and a silent auction. Event times, venues and costs…