An easy tactic for getting people photos is to catch them posing for other photographers (long lenses help here)
Or, get the other photographer in the picture, too.
Summer is the time to get married.
I like to take scenic photos that show people interacting with the environment. That's something I've learned over the years of looking at photos on this site. When I was younger, I'd always try to get shots of buildings or other scenery without people in them whenever possible.