@onlychildandhamster you have a greater advantage over other people. You do your research before you decide whether the pet will fit in financially and in other ways, which is a lot more than quite a few people do. And you have their welfare rights in mind (vet visit and space etc). I just wanted to say I hope that we haven't put you off them if they would fit into your life. We used to have pets as children - (guard) dogs and cats (which ate mice/rats!) but guinea pigs were my first pet as an adult. I got them for me and not my children. They used to help feed them and change their water but couldn't clean them out as it seemed to trigger allergies. I'm okay with that because I got them knowing I would be 100% responsible for them. Now they're outside it's more of a struggle
BUT I still adore them after 3 years (and 2 years for the girls)! It's not nice to go out when it's cold but I do it anyway. It gives me a routine which I quite like. The most important thing is that they're happy, which makes me happy. And they're still happy to see me when I go out to them. One of the boys was quite 'needy' and up to now he's still the same.
I love my piggies and so does the husband (okay maybe just really likes) and so do the children. Even my mum who didn't like them in the beginning will ask after them

In conclusion, they're very characterful, intelligent and interesting animals in terms of their general behaviour and how, like us, they sometimes don't like each other! Their hierarchy is interesting especially when you have a boar amongst sows. Maybe one day I will have a boar in with some sows. But for now I am content with my boar pair and sow pair.
PS sorry your wedding was postponed. I can't remember what guidance they gave for weddings during lockdown, only funerals. All the best with your decision

There is a section for other pets even if you decide not to get piggies.
PPS I sometimes go on mumsnet (never signed up though) and have read the threads about guinea pigs (and other small pets). Not many are...experienced with their keeping there I'm afraid to say.