>>>Any strategies you would suggest?

All of the casinos are very friendly and will load you up on chips. Buy a large lot to look at because many of the chips will be in pretty bad shape and not suitable for your purpose. (I had to change tables once or twice because it seemed some tables have all new chips while others get all the trash) If you are lucky (as I was) you will get a couple collector chips handed to you on the buy in.

>>>How long of a walk is it? Just guessing I would have thought it was about a mile or two. Is it longer?

My understanding is that the Boardwalk is about 4 miles long. It's quite a walk and then you have to hit the Marina.