Minor adjustments to handlebars and saddle, seatpost can be very easily done at home. I have done recreational rides of up to 104 miles and none of my bikes ever had any professional fitting done at an LBS. The best way to dial in a fit is to go riding and experiment with different set ups until everything feels perfect...Then again I don't ride a racing bike, it seems that majority of fitting problems happen to people who commute on new road racing bikes. I never want to purchase a bike which requires for a person to be hooked up to a computer to make the bike fit properly and which requires complex mathematical calculations to make it rideable.