Very easy walk. You can go either of two ways....
Around by Jellyrolls and Atlantic Dance Club and over the bridge, take a right and you are there. Or, go past ESPN Club and towards Epcot. Take a left and you will be at Beach Club...just keep going until you get to YC.
Depends on where you are in BW. It is not more than a 10 minute walk either way...and maybe only 5 mins. We do it all the time, just to take a nice walk after dinner.