Which size of photos v memory card capacity

Hi,i wonder if i can have some opinions please,we are going on holiday soon & i am restricted to the c/f cards i have.Can anyone tell me how much more resolution S/FINE setting has compared to the large setting.I wont be printing more than A4 size at the very most if at all,but on the Super/fine size my c/f cards get eaten into very quickly.
I also use a D30 & that has the same amount of photos on a card as the large size on the G3.
I am looking at getting a storage device to combat this problem when i cant burn cd's on a computer,anyone have any recommendations please. I am in the UK,many thanks for any help,Trumper

I'd recommend large/fine. I get up to 200+ shots on a 256 MB card, gives you room for cropping, and the quality is great for your purposes...

Dana

Does anyone use any portable storage devices to download the C/F cards onto when away from a computer ,ta again,Trumper