I tend to approve of Mr. Dexter's suggestions but I regard the "friendly round" as practice and I have to admit that most of my "practice" occurs on the range (and on the carpet in front of my TV). I think if the game is golf and it's an official round, rules have to be respected. Having said that, I think everybody ought to play a regulation, official round by themselves sometime and if the clock shows a 4 hour round, then they need to consider what they could have done to speed up their play. As an unobstructed single, walking and carrying, at age 60, I expect to be sipping a beer in the grille room 3 hours and 20 minutes after I tee it up at #1... 3:25 if I have to change my shirt and shoes. A lot has to do with the culture of the club. If the clearly stated expectation is that rounds will conclude in 4:15, then most days, the rounds will conclude in 4:15 or less. If players are coddled, even encouraged to savor the country club experience for a day and no time expectation is explicit, then the pace of play will be substantially higher for some folks and it only takes the guys in front of me at 4:45 to make my round approach 4:45. I play with all levels of partners. I try to keep "lessons" to a minimum because "lessons" slow down play and "lessons" (e.g. "Here's another ball. Move your hands forward this time and lower your front shoulder...") never seem to help anybody in the context of a round. However, one lesson that I will not skip involves discretely telling a partner how they can be more efficient as they move around the golf course.
Here are some of the things that I've shared:
Before putting, place your kit between the cup and the next tee. Never leave equipment in a position where you have to walk back toward the following group to retrieve it after play on a hole concludes.
Wave people up on a par three, especially a long par three.
Do not wait in a cart (or just standing there) while another player prepares to hit, if you have not already located your ball and begun your own preparation.
Play the tees that suit your level of skill.
Use a range finder if you have one and if it's permiitted under the rules but don't use it for every shot. If the sprinkler head says 57 yards and it looks like it's 57 yards, you needn't bother to see if it might be 61.
PGA tour pros aren't necessarily great models on pace of play, unless it's John Daly and he's +12 on Day 2.
Here's some advice that I'd offer course operators (if they'd listen):
Space tee times at least 10 minutes apart. If you're too dumb to understand why and you insist on 8 minute slots, don't send out marshals to whip the herd, it only makes them passive-aggressive.
Unless it's the U.S. Open Championship, four and a half inch rough is overkill.
Play patches of tall fescue as hazards.
I can tolerate carts but cart-path-only really rankles me. Admit it, the course is a mess and you just want the money.
Early holes (1, 2, 3, 4) playing directly east into a rising sun cause your first groups of the day to lose golf balls. While they search, the whole day's pace can be affected. As go the initial groups, so goes the day.
Late holes (16, 17, 18) playing directly west into the setting sun cause your last groups to slow for reasons similar to those noted above. I can't tell you how many 16 hole rounds I've endured while listening to the guys ahead debate whether it "... looked like it was headed right" or it "... looked like it was headed left".