I have been playing the facebook game for sometime but relatively new to the mobile apps. For both the mobile blackjack and slots you have the series of "challenges" as you move through the strip. At each stop there is a bronze, silver and gold challenge. If you just take them as they come up it will do all the bronze one's first and then I assume you start over. But - if you want you can do bronze, silver and then gold at each point. Question is whether one way is any better than the other? Any other strategies to doing those challenges? For example, if you are come across one that is based on collection of LP's does it make sense to switch to a different challenge for awhile and then switch back right before the LP meter fills up?