Having someone permanently located on site to deal with your AV issues soon makes sense with enough facilities to warrant such a level of attention. (Everyone would have concierge service if they could.) A concierge on site means your rooms are regularly checked for functionality and kept in working order. Downtime is minimised through pro- active steps being taken each working day. Your IT people get more time to do their real job.
Depending on location it may be possible to share concierge services with another Ci Group client within close proximity. It’s certainly worth asking the question. Concierge service may be more affordable than you expect.