Swamin,
We do follow Ahaara niyamam and avoid Para Annam when I am in home town. How and what should be followed while on pilgrimage?
There is a saying that – follow complete acharam while at home, follow atleast half while visiting others home or town and above all “as the situation gives room” while on Yatra. Ensure that any prohibited items are not Cooked, and that the food is offered to Perumal before eating.