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I heard they organized senior to trip before. You can ask them for details. The trip I once attended is for adult and the tour speaks only English. This is a non-profit organization. The tour is good and very condense. But I want to remind you in those trips, people lives in hostel, which may be tough for seniors who are not strong enough. " \$ V) ^7 E r' |' j: r0 ~6 s0 ^% I* B8 T
Good luck!