I can understand the request. Public transport there is, whilst fantastically good, pricey...I guess they are trying to ensure everyone is enjoying the experience considering how much they pay for it. The request fits in with the culture - so quietly and calmly respectful.
It’s a brilliant place and the 2 weeks we had on holiday there in 2013 were 2 of the best. Culturally, historically, hospitality wise - it really is something else. Envious of anyone who is there for the World Cup. A couple of guys at work have just gone over for it - single and with no commitments. Will be the trip of a lifetime!