We just got off the Oasis and we were on My Time Dining with 7:15 reservation every night, which was a little later than our ideal dining time. We ended up joining the "wiithout reservation" line shortly after 6:20 every night. If it's not the formal nights, we were usually seated in the same section within 10-15 minutes but it does varies a bit, depending on when the folks in the first seating finish their meal.