I'm not in the UK where the vaccine rollout was much quicker. I'm in an eu country where the rollout was so slow. My own parents in thier 60s. I would consider them to be vulnerable in relation to the virus. They got one dose of the AZ vaccine and the other will be due in July.
Their behaviour since getting the vaccine has been shocking. They are behaving as if they are covid safe and bulletproof against covid with house gatherings and parties with their peers, public transport journeys every week, etc. Its just the level of mixing that they are doing and each time putting themselves at risk for contracting the virus and putting others at risk for passing it on. They are not fully vaccinated and they know its a two dose vaccine. I know many people here would argue and defend them here. In my opinion it's the level of mixing that they are doing without a care in the world for others and consequences of they contract the virus or if they pass it onto unvaccinated people. There's several different mixes going on every week instead of living life with some sort of a balance and perhaps one piece of mixing per week instead of the several they are doing. Just until they are fully vaccinated.
I am vaccinated due to my work and in the number of weeks that I was waiting for the second dose I continued to follow the guidelines as much as possible so that I didn't want to jeopardise the vaccine that I already got. It made sense to give the vacc3as much chance as possible.