Has anybody caught the Bus E21 from Hong Kong international airport to the Royal Plaza hotel in Mong Kok East district , I wondered how easy it was to use and what time it took to get to the destination, I have heard that it does not stop at The Royal Plaza Hotel , can anybody tell me which stop to get off the bus , I arrive at around 2PM so it will be light , also would it be difficult with luggage , I will have one suitcase and one bag, it seems the most cost effective option, many thanks