To be fair, we have never taken guests, but I would think that it would important to 1) make sure they sleep in comfortable spots and are well rested, 2) avoid packing in too much so the trip is relaxing, 3) read the group and adjust instead of going with a pre-determined plan, and 4) have plenty of coffee (mornings) and alcohol (rest of the day) available - assuming they drink these trip enhancers.