Sorry for the late reply. I just got back from a short trip to the mountains :)
I hope that you are feeling a lot better now and the fact that you are taking a trip to Ireland empowers me to think so :) Congrats for you new purchase...i've heard that the Lee filters are pretty much as good as it gets :) Nevermind the husband :))
I'm really flattered that such an experienced landscape shooter such as yourself is asking tips from me.
I for one pretty much picked it up along the way. I talked a lot with Paul Haynes and when i visited England we went shooting one day at the coast. Unfortunately, the weather was...well...English and i could get too many colors in the shots.
However, from what i've seen at other photographers, too, the idea is to focus on two main elements: dynamism and texture.
1. You can play with the dynamism of the scene by allowing the waves to be visible or making your exposures long and create a tranquil scene.
2. Weather you have sand, small round rocks or big angular ones, you can always create a good contrast of textures between the beach, the water and the sky. Play with these (and the effects of the shutter speed here) but also don't forget to try some lower POVs with more attention on the beach (if the waves aren't too big so that you won't get wet:)).
Aside these two elements, i think it's pretty much just like every other landscape shot: best moment of the day, best perspective etc.
If there is anything else i can help you with, please feel free and ask. Either way, i want to see top photos from you when you get back :)
Cheers and take care