Irish Language/Dialects Help?

Más é do thoil é was always common to me , but friends from the west say Le do thoil , although they understand and use both , just like english different counties have different ways of speaking , always found Kerry people hard to understand regardless of language

They are two ways of saying the same thing.

Strictly the first means " If it pleases you" and the second means " If you please"

Anyone listening and purporting to understand Irish would understand either to mean "please" as you say.

'R's are pronounced as URR not silently as AH

I'll give an example: "Back again" in Irish is "Arais arís" pronounced

" A rash a reesh ". Notice that in the case of 'arís' the ' í ' has not a dot over it but an upward sloping stroke called in Irish a ' Síne fada'

( Seena Fadha ) and which converts ' arish ' to ' areesh '

Another example is the Irish word for secretary " Rúnaí " pronounced "Ruin-ee"

" Le do thoil " is pronounced " Leh - Dhoh - Hell "

I would use and hear both being used, think they are just differnet ways of saying the same thing...people would understand either

Different pronunciations would be different dialects or accents

...I would pronounce le do thoil as le-duh-hull

Yep its just different ways of saying the same thing.

I grew up with 'le do thoil' but others grew up with a different form.

people from different parts of the country have different accents and that can affect the way they pronounce the words...

tomato or tomato??