*Indoor mixing is not low risk, indoor mixing is just about the highest risk, the mitigations don't achieve that much.
For a church service you could trivially do outdoors seems pretty stupid.*
I completely understand and agree that outdoors would be lower risk. I trust that we would be doing this, if it was a feasible option, I don't personally have any role in making such decisions. We have no outside space beyond a tiny car park and maybe there are issues with outdoor PA systems and neighbouring houses?
Consenting adults have to make their own choices, if they wish to come along then they are very welcome. If they would prefer a phone call or for someone to come and have a chat from the end of the drive, then that is available too. Likewise, things like school lessons, gym classes and routine blood tests would all be safer if outside, but that isn't possible. We have to do the best we can, following the guidelines, and people are free to attend or not, as they see fit.
I'm glad to hear that some of you have worked out ways to have outdoor services. The additional hot chocolate is a wonderful idea!