Islay can be reached via plane from Glasgow or via Bus from Glasgow to Kennacraig followed by a ferry to Port Ellen or Port Askaig.
For flights, see https://www.loganair.co.uk. If you plan to fly you should book very early.
For Bus travel from Glasgow, see https://lanniesfoodandtravel.com/2021/08/27/how-to-get-to-islay-from-glasgow/
For ferries, see https://www.calmac.co.uk/kennacraig-portellen-portaskaig-islay-ferry-winter-timetable
Accommodation will be in guesthouses near Port Ellen and Bowmore.
The owner of Laphroaig View Guest House is also a taxi driver and has shared her details and those of the business owner if anyone needs a taxi during their stay on Islay. They have a minibus and 3 large cars:
Bruichladdich Taxis
Carole: 07761 254986
Andrew: 07899 942673
Tourist information can be found on the following link: https://www.islayinfo.com