Entrance Fee, Request Time Arrival at Dukezong Town, Last Time to Book for the Next Day Trip

1. Does the CNY230 includes all the places you mentioned above especially the Balagezong Snow Mountain? Because I heard before that there will be an additional fee around CNY75 to go to the Balagezong snow mountain.
2. Can we request a specific time (around 17:30) to reach the Dukezong Ancient Town if I join the one day trip?
3. Based on my understanding, I can buy the day trip package at the north gate of Dukezong Ancient Town, right? so what are the last time for me to buy the package for the next day's trip? Am I able to deal for the next day trip if I book a night before since my train arrived at Shangri-la at 18:30 and plan to have the Balagezong trip on the next day.
Appreciate your reply. Thank you in advance!!