John,

Theres a couple of default answers to your question.

First, the Kenai Penninsula is a good bet. Plenty of campgrounds, plenty of streams, plenty of fish, and plenty of other folks to keep you company. June - July are easy months where you know there will be fish in a number of locations.

Second - Matsu Valley north of Anchorage. Basically, you'll be fishing the Susitna drainage. Alot like the Kenai with plenty of streams, fish and people. This has a few more locals than tourists but don't be mislead, there will be plenty of company. Run timing is similar.

First thing I would do is go on Amazon and buy the Alaskan Gazetteer/Atlas. This will let you look up and highlight streams as you learn of the where and when.

Good luck,

Steve