The more casual the format, the better, IMO. People can be turned off by competition. A team concept is helpful in that regard so I concur with the split-flipper suggestion. Also, it cuts the wait time by half which will also keep people engaged.

Another thing you could try that is casual and a bit goofy would be to have a gauntlet relay. Pick some very simple/easy objectives (<30 seconds or so to achieve) on several machines and have your teams run the gauntlet and tag their teammate(s). Fastest time to completion wins.

For single player competition you could mix in some stall ball. It is simple and frenetic but has the disadvantage of more waiting and elimination.

If you decide to do pin-golf make sure the objectives are VERY EASY. People always seem to underestimate difficulty with pin-golf objectives.

Whatever you decide, report back and let us know how it went!

Teams of two. You could do alternate shot or split flipper. I agree with using very easy rule-based objectives rather than score based as chuckwurt stated.

Let us know your lineup and we can make objective recommendations.

C2c has a lot of good suggestions but some of them will be too hard.

I would definitely try to incorporate the game’s main feature int the objective. Maybe for some you could adjust the settings to make them easier such as lowering the number of Frank Hits to open the ramp.

Definitely include:
achieve a mag a flip on TZ
Use the glove on JM
Achieve Thing flip on TAF

Access upper playfield on TS
Access mini playfield on MANDO