Sounds like fun. I'm never sure how to react to other dogs. I try to leave them to it as much as possible, and so far we've been fine, but Buddy has a long way to go with his doggy manners. I know that if I seem nervous he will pick up on it, and the last thing we want is a nervous dog.
There was a large dog yesterday, which had a rather deep growl, and quite a fierce manner, but no harm done.
Enjoy those walks...it opens up a whole new world once you can take them out doesn't it?