COOKIELESS MICK says,

For me a guitar's advantages are :
Ability to play chords ,portability, versatility , potential for composition, ability to accompany singing
Disadvantages :
difficulty in playing fast reels and jigs, there's often too many of them at gigs; they go out of tune ;they don't make a lot of noise without amplification.

Mick, what you need is an accordion.
Advantages, all the same, plus you don't have to plug it in.

Disadvantages :
difficulty in playing fast reels and jigs,
ACCORDION ~~ No problem.

there's often too many of them at gigs;
ACCORDION ~~ Not usually

they go out of tune ;
ACCORDION ~~ Not if you don't overheat them

they don't make a lot of noise
ACCORDION ~~ Depends on what you mean by A lot

Think it over, Mick
JOHNNY