Moving furniture and heavy items especially in the hot sun can become one of the most daunting tasks. Most movers and local moving companies are wise enough to bring their own water, but they greatly appreciate if cold drinks are available. This can also help the moving process go smoothly with a well hydrated crew.
During the packing process, for the sake of you and your movers, be sure to label boxes according to which room they belong in. Careful preparation could save you money because most moving companies charge by the hour. And furthermore, most movers hate having to carry a piece of furniture or a load of heavy boxes more than once. If your boxes and furniture items are labeled correctly, then this can greatly reduce conflicts.
Finally, if your movers did a great job and you are completely satisfied with the job, then be sure to tip them according to how well you feel they did.