Thanks for the tip. In the end we just flew down to Kerry and stayed there for longer, driving back to Limerick in a hire car. They also parked in long term area but no big deal when its a longer stop. Will do more research next time to check other options. Slight correction to published parking rat...

Although the landing fee doesn’t look too steep and self-handling appears possible, Shannon airport’s published parking fee for light aircraft is €2 per 30 minutes = €96 per day.

Does anyone have any experience or up to date knowledge of these charges?

I haven't seen much discussion about Cork's upcoming major runway closure so far. This AIP supplement explains that the main runway will be closed for 10 weeks from 13 September 2021 a shorter 800m portion of 07/25 will remain open no IFR approaches no lighting no navaids other than the Cork VOR/DME...