Plus 1s & Kids and covid restrictions

We’re getting married in August and STD/Change the Dates were sent out last year. Haven’t sent invites yet but emailed everyone telling them to book travel since Tahoe is already getting super busy and I was worried people would be left without a place to stay. Venue said we shouldn’t send invites until June 15 when CA is hopefully fully reopening, but that wouldn’t give people very much time to make plans.


So, here’s my question: Our original STDs were sent to people addressed as “Joe and Guest” if they had a plus one and just “Joe” if they didn’t. But with California COVID restrictions we might be limited to 150/200 guests depending on what tier we’re in at the time. What is the etiquette around “feel free to bring a plus one for the weekend as we’ll have other more casual events open to all, but due to capacity restrictions they might not be able to attend the actual wedding”. Is that super rude? I’m hoping we’ll have enough space and I’m worried ppl won’t come if they don’t know anyone. Maybe they’ll just do that anyway and I don’t have to voice it? If we end up having to cut the guest list then plus ones will be the first to go. Really hope it doesn’t come to that because it will be a nightmare.
Similar situation with kids. I totaled up 70 kids (our friends are all in family mode) so the intent was always no kids just due to quantity. And now with CA requiring vaccinations for indoor events that gives more credence to not having kids. That being said, since most people are traveling from out of state and with COVID people might not feel comfortable having a stranger babysit their kids, so I don’t want people to not come? Should I say something like “please let us know if this is an issue” or “policy may change depending on CA tier at time of event”? No one has mentioned anything yet so maybe won’t actually be an issue. I don’t mind there being a couple kids there, I just don’t want to be overrun! I think a lot of people are being nanny/in laws to look after the kids, but obviously that’s not an option for everyone. I also want to let ppl know that nanny/in laws would be welcome at our other weekend events, but not sure how to phrase that.
Since we haven’t sent out actual invites yet I just worry that people will make plans thinking their plus one /kids are invited and then freak out when the invite is only addressed to them. So I’m wondering if I should address it now before ppl book their travel?