Before heading out for a whirlwind tour of eight countries in six days, make sure that is what you and your travel buddies want. It might not be the best experience if all you do is "run, run run". On the other hand if you want that type of trip...go for it.
Decide in advance and your trip will be much better for all travelers. It seems like such a simple step. But it will make for a much better experience and more delightful memories.