A use case for ‘upon_request’ is I went to a coffee shop with a friend today, they have sensory sensitivity and the music was too loud. Upon request, the shop happily and promptly lowered the volume to accommodate our need.
Additionally, many people I know that have sensitivity to sensory items also have some form of anxiety around asking for accommodation. I think it would be useful to tag that a place is particularly upon request instead of relegating it to a comment. That way if a data consumer wanted to list or filter places by default or request it would be possible.
Events I am not sure if there’s a more always to capture but would be open to feedback to anyone hosting / participating in such events!