visiting in Huanlong & Jiuzhaigoy at 29/9- 1/10

my husband and me will be flying from Chengdu at the 29/9/ arriving in 11 -morning
1. can we visit at the day of arriving Huanlong?
2. can we order in advance bus tickets to the airport back to Chengdu? pleaze tell us how to do it beacouse the national holiday. we don't want to miss the flight in the evning of 1/10