Exocytosis of mast cell secretory granules
Mast cells contain a number of large, granular structures that are regarded as “secretory lysosomes,” yet they share several features in common with large dense-core vesicles, particularly with respect to the mechanisms of exocytosis. Upon activation, mast cells "degranulate" and exotcytose the contents of granules.

SNARE-dependent mechanism mediates exocytosis of neurotransmitters, hormones, and cytokines. Exocytosis of MCG is also SNARE-dependent. SNARE proteins are a family of evolutionarily conserved proteins that facilitate docking of apposing membranes and facilitate the fusion of membranes to accomplish exocytosis. The characteristic feature is a SNARE motif, a stretch of 60-70 amino acids, arranged in heptad repeat. This feature allows SNARE motifs of the individual SNARE proteins (from opposing membranes)  to zipper together, forming a core complex of a four helix bundle. The major SNARE proteins involved in mast cell degranulation include VAMP-8 (integrated in mast cell membrane), SNAP-23 and syntaxin-4 (both plasma membrane bound)⁠. There are other layers of regulation of course. The SNARE accessory proteins synaptotagmin 2 (a calcium sensor), Munc13-1/2, Munc18-2 and complexin-2, exert negative or positive modulatory effects on mast cell granule exocytosis (Woska &amp; Gillespie 2012).

EDIT: I don't know about PKC's involvement, but I can speculate that it's part of the signalling pathway after activation of the Fc receptor and upstream of events that initiate mobilization of intracellular calcium, which would then immediately trigger exocytosis. As for movement, if they're like dense-core vesicles, move along actin filaments using a myosin motor (Va or Vb, for example), and in association with Rab-3. This is speculation though, and I'd suggest looking into the literature for more detailed analyses as you are asking for a broad literature review.