I am planning to travel to Alaska in the first or second weekend of June. Can you tell me what are the pros cons of reaching ANC on June 6th vs. June 13. Air tickets for June 6th are much less expensive than June 13!

Of course one of the highlights of the trip would be Denali National Park. Some of the other activities I am planning are:
1. Day cruise from Seward/Kenai Fjords
2. Whale watching

My parents (age 61 and 58) will be traveling with me & my husband. Any ideas on what we should do? They can complete easy to moderate day hikes.

Thanks