We have been there a couple of times and love it. Every two years is our plan and we stay of one month to 6 weeks.
We go early (think cold) mid/end of May so parks may not be open. Boon docking is our major overnight accommodations so cannot comment on parks. La Scie has a nice small park that is inexpensive and views of the water and possibly bergs. We went this year and it was a banner year for icebergs...almost a berg in every cove...quite amazing.
Hiked a lot whatever we could find from trails to beaches.
Only saw one moose this time.
Check out any municipal parks as well and try boon docking.
Donna