The monorail works if you're staying in a hotel attached to the monorail, or need to go to LVCC.  But  if your feet are hurting and you're only going one or two stops down, and think this is going to be helpful, don't bother.  Because the monorail is placed soooo ridiculously far in the back of the hotels that by the time you walk through the casino, through the gift shops, and possibly from across the street since it only runs on one side of the strip, and then do the same thing over again once you get out of the monorail, you could've walked from your point a to point b and saved the money.  In that instance, just take a cab.