"Official tours" have to be connected to or related to the work that one is employed for. In such a case, the matter will depend upon exigencies, priorities, objectives, and your suitability for the "official tour"! I am saying this on the assumption that "spirituality" can and should be differentiated from "religion"! I cannot quote any government rules, etc., as I am not familiar with these, but I believe that the question should be resolved based on the above logic!
Regards,
Samvedan
September 30, 2012