In reply to Camerontaylor158:
I've taken a pad on the bus before, but I could see it causing a wee bit of antagonism on a rammed bank holiday weekend!
What you could do is a drive-by pad drop and then get the bus without it.
You may even struggle to park at the park and ride on a busy weekend, but you can always park somewhere, whether that's in the local overflow field or back in Llanberis and get the bus from there.