Oh wow...I didn't realize that! I guess "reserve" was my word, not theirs. We usually don't actually use DME because my H and I both get carsick on buses, but we give our info as a backup in case there isn't Uber (or now Minnie Van) availability on our arrival day. If we're not using it, we walk up to the podium and let them know we've had a change of plans...I always assumed we had to let them know so they weren't saving a space for us that someone else might need. But given what you've told me about it not actually being a reservation, do we need to continue to let them know at the podium that we've made other arrangements?