Section 73 application to remove conditions 6 (cabin use) and 7 (occupancy and register) and a variation to condition 1 (approved plans), 2 (materials), and condition 4 (Landscaping) of planning permission reference S.13/1508/FUL Construction of an ancillary outbuilding, provision of 16 log cabins for tourist accommodation, and retention of marquee (as amended by S.19/1439/VAR)