It took us several days to realize just because it looks close does not mean it is. There is a lot of walking up and down the strip. There is trolley service available for $1.75 and you must have exact change. Many of the resorts also have shuttles available for a price. Use them or you will be very sore by day two.
On every corner someone is offering you "free" drinks or shows. There is always a catch. Every free show requires you to buy at least one drink and much more than the drink costs, or you need to sign up for a players card for that casino.
We were so dazzled for the first few days with the crowds, the size of the casinos, and the fact that they are shoving pornography in your face at every corner. Couples are better off walking a small distance from each other as you will be bothered less. They prey on couples and don't bother you if you appear to be walking alone. We did have a lovely week and got a lot of exercise. The weather there is beautiful.