Well, I hate to say it, but people like @DameLucy and her friends who seem to think current guidelines don't apply to them will be the reason why many more people succumb to Covid-19.
Your daughter is sticking to the guidelines. Since you say you are very close, it can't be easy for her to stick to the guidlines, but she clearly feels it is best to do so. You piling on extra pressure must be incredibly stressful for her.
I actually think you are pointing the finger in completely the wrong direction here - it should be at all your friends and their families who think the rules don't apply to them and are meeting in large family groups and not social distancing. Yes, you may be jealous of this, but they are in the wrong, and your daughter in the right on this one. They will be the reason Covid-19 persists.
Also, by pressuring your daughter, you are saying you don't respect her wishes when it comes to her or her child - I certainly wouldn't be keen to leave my child with someone who puts self interest above my wishes as a parent in normal times, let alone now.
I acknowledge it must be hard not to cuddle your grandchild, but I can't see that making your daughter even more anxious over what was a hard decision for her will help your relationship with her or her son in the long run.
Go speak to your friends about their rule breaking then reflect on why your daughter has decided to be cautious. Let's hope all your friends and their families stay well in the meantime, yes?