You are sent two DME tags per guest. I've read here (but can't confirm) that you can request additional tags. But since almost all airlines allow only two checked bags per person, why would you need more than 2 tags per person. You tag only your checked luggage, not your carry-ons, just in case that was a question.
DME will transport anything that the airlines transport (Bags, golf clubs, bicycles, etc)... so if you have 10 bags per person, DME will transfer 10 bags per person. (Of course your airline will charge you an arm and a leg, but thats another matter...)