Since you asked the question, from a quick look 13 posters have responded with their experiences (apologies if I've missed anyone).
- 11 said they had very good experiences in terms of organisation, speed, social distancing etc. One reported their Dad had a wait due to a clerical error but noted that everyone else at the centre seemed to be dealt with efficiently.
- 1 person said they had bad experiences at Liverpool Heart and Chest Hospital. The issue seems to be a clerical error but also mentioned that social distancing wasn't well observed
EDIT: Sorry
@bigjonny says on the next page he was happy with his experience and has no qualms about going back. I put him in this section as he mentioned it was busy but he didn't actually say anything negative about his trip there. So I have amended. My mistake, apologies.
In conclusion, based on a small GOT sample, the vast majority of people have reported very positive experiences so you shouldn't be worried if you are soon to be vaccinated.