My first advice is for you to download the Disneyland App. Wifi is free all over the amusement park so even if you do not have mobile data, no worries. Having the mobile app is definitely a must.The app will show the schedule of the shows, where the characters are for photo op, it will also help you to go around the park and look for the attractions. Having the app will let you plan your activities better and you will not definitely miss or simply choose which attractions you will visit first.I recommend that you reserve one whole day of your vacation here at Disneyland alone.Fast track tickets are also highly recommended and plan on using it strategically :)Food and souvenir items are kinda expensive but YOLO so don't be too stingy and splurge a little bit.Every part in every ride is well thought off and the details in every attractions are all spot on! I feel that I am part of the story in every ride and attraction that we visited. The parade during the afternoon and evening are also a must see!But the most important thing that you cannot miss out on is the fireworks display. This will seal the deal. This will make every dollar that you spent counts. This will definitely bring you back to your childhood (and for me, it brought tears to my eyes especially during the  A Whole New World Song , I was even singing it on our way home and before I sleep)Your trip to Hong Kong will not be complete without visiting HK Disneyland.