There is, apparently, still no substitute for skipping out with the gang, liberated from the obligations and interruptions of the daily routine. They feel valued by the company. They've learned new skills. They feel they've forged some great new relationships. On the other hand, she warns, a poorly planned retreat can do more damage than no retreat at all.
People feel their time has been wasted.
You've disrupted their life, at home and at work. If you're going to counteract all that, you'd better run a really good meeting. Maybe you've just been through a merger, or you have a new product to introduce to your sales team. Know your audience and plan for it. A board of directors requires different handling than a junior sales team.