We stopped in HK on the way to London, went to Disney for my 5yr old really but had Mr 2 as well. Even with a sleep beforehand its such a full on loud place that a toddler only lasts 2 3 hours and you leave the park having spent $1400hk for 3 4 rides not to mention travel and food. If your a family of 4 think about tossing a coin and having one of you stay back with the youngest. Disney itself was great, my 5yr old had a blast even with the queues (which can be huge, so avoid the weekend)