5/4/2021: Please see the unhappy update at post end. I’ll update again if I learn more. 5/27/2021: I have an appointment! Please see: https://transitophile.com/chango/covid-19-vaccine-for-expats-in-madrid/ I write to share the little I know. Or think I know. Will your embassy help? Mine won’t. Neither will the UK, Australia or New Zealand embassies, if it’s any consolation.…