请教YORK MINSTER的关门时间及如何参加evening song

官网上的描述如下，我有点看迷糊了，有几个问题求指点，谢谢：
1.普通游客最晚17点进入，可以逗留到几点呢？
2.如果我想听17:15的晚颂，是只要一直逗留在里面等着就行，还是需要提前报名？晚颂17:15开始，一般持续多久，期间能不能离开？
For services
Open daily from 7:00am until 6:30pm
For sightseeing
Monday - Saturday: Open 9:00am; last entry at 5.00pm
Undercroft
Monday - Saturday 10am - 5.00pm
Please note: Due to Evensong preparation, the Quire closes at 4.15pm for general tourism as does The East End and Crypt (from 4.30pm). All until 6pm. On Sundays these time are brought forward one hour.
All other areas are unaffected.