This is a royal museum, so remember strict dress codes, school bags can not be brought in, to keep some money on the body. Men should wear long pants, women should wear long skirts or gauze cages. Yau cages can be bought, according to the quality of 50 or 100 baht. We used them to spread out on the beach during our subsequent trip. The Grand Palace ticket is free to visit, so I don’t know how much it costs.