Comment by tialaramex

Ambulances are for emergencies. An ambulance could be dispatched depending on availability, but the dispatch team has more experience with this than I do and so they - like the hospital's initial triage team - would put me in the "injured but not dying" category and maybe I get an ambulance in an hour or two depending on other priorities.

They don't want me to go home and fall asleep, because it is possible that I have a brain injury and will never wake up, but their advice is going to be "Can you get somebody else to drive, or maybe call a taxi?" not "We will Blue Light an ambulance to you ASAP".