Many drones will struggle with the transition from indoor to outdoor flight. A machine that relies on GPS may go from a disconnected to connected state, and that can result in erratic flight. Many drones use visual sensors for navigation and obstacle avoidance, the sudden change from a dark environment, with artificial lighting, into bright sunlight can throw false positives for obstacle avoidance. We're not saying don't do it, just go slow and be prepared for the drone to hiccup while it recovers from the change.