Fierce warriors protect the monasteries.  One at each of the four cardinal points around the entrance. As this figure is blue I think he may be Virudhaka, the King of The South.
 

Pilgrims in their hundreds bring yak butter offerings to make merit but lamps are usually attended by monks ever mindful of the risk of fire which has destroyed many monastic buildings.

Organizing the Khatangs, (white scarves) which they will present to holy images.