The Rose Garden is outside, eh. Looks 100 max here still
Can we just meet at the local park instead?
The limit is the same (100 people, subject to the 4sqm rule), whether it is an activity held at a place of Public worship or a religious service held at a different venue/facility. If the activity/outdoor gathering is not a religious service and not on the premises of a public place of worship, (e.g. a park), there is a maximum of 20 people allowed. Given that this is less than the number permitted in places of public worship there would be no advantage to meeting in a local park.