Not really. I played the moon with a fireteam for well over 5 hours and I still don't think I saw everything. I even did the glitch through the gap and saw parts of the rest of the map and there was quite a bit more in the hive area to explore. And if you think you can be smart and say it was only open for 2 hours. Think again. If you didn't leave the servers didn't kick you from the moon. So 5 hours was easily done.