the reality is that if its rolled out now by the Xmas only care homes and the elderly 80+ will be vaccinated.
There are 40 million vaccines (20 million doses) and 68 million UK residents
First batch is only 10 million which only covers only 5 million 'most vunerable' people
1st priority is old age care homes (this includes vaccines for care home staff) - this is approx. 418,000 residence + approx. 87,000 nurses vaccined (unsure about other staff)
2nd priority is all over 80 years - approx. 3,200,000 million vaccinated
3rd priority is all over 75 years - which we would exceed the number of vaccines availible by this point, many would have to wait until furth baches arrive
2nd bach will be a steady delivery of the remaining 70 million (35 million doses) coming in in baches throughout the begining of next year
4th priority is all over 70 years - will be in follow bach beging of next year (approx. 8,770,000)
5th priority is all over 65 years - will be in the follow up batch of next year (approx. 12 million vaccinated by this point)
6th priority is all high risk adults under 65 - some of these people might just make it into the secured number of vaccines but unlike all will
after that we have run out of vaccine unless we can secure more which wont happen until other countries have secured their 20%, since we where the first this could take a while
so I very highly doubt 'going to a wedding' would get you anywhere near a vaccine for the forseeable future regardless of money