Maybe I'm just a perpetual scaredy cat but I NEVER do any major work JUST before a long road trip. I like to do at least 100km around town before I head out, just to be sure everything is legit.
I even try to time my oil changes accordingly. Doesn't always work, but.....
same. we actually refuse non-necessary work if customer say they're going on a long trip right after the job's done unless they can put a hundred or more miles before heading out.
changing tires, yes. Doing lift, no. Brakes, depends on how much is left. Oil change, no unless the oil is nearing or over 10k miles or is really really black at dipstick.
This is to ensure if anything was to go wrong, it'd go wrong while in town instead of somewhere far. Sometimes replacement part fail, sometimes **** happens.
and most of our customers bring their vehicles in for pre-trip inspection free of charge where we check fluid level, check all nuts and bolts of stuff that we've touched before, torque wheels, check brakes, check bulbs, check tire pressures.