It would depend on if not going would cause issues with family. If it would I'd choose a nice smart casual outfit from my wardrobe & smile for an hour or get a rock solid reason to not go.

I wouldn't do a card & gift. I'd send a text message or call before the day to wish luck if I know they're only having to cut numbers due to Covid. I feel sorry for people who've had their weddings affected so would try to be supportive. They're possibly feeling bad already.

Buy a nice card (no gift) wear something from your wardrobe and leave it at that. Me personally, I probably wouldn't even go but that's just me

Yes I wouldn't bother going to a cerwmony if I wasn't invited to the receptiin. I think it's a slap in the face and although its 'their day' if you cant have people at the reception dont invite them to the ceremony its rude in my opinion. You cant celebrate with us but you can watch the main event. Doesn't sound right to me.

Sounds petty but yep. Just a card and no appearance

Limited indoor number laws makes this understandable. Buy a $20 Kmart dress and accessorise 😁

Buy a cheap card
Wear what you have in wardrobe

Personally even if I was invited to ceremony, I'd wear something I already have. Maybe a card with $20?
Things have changed cos covid so try not to take offence ☺

If you are only going to the ceremony I don't think you need to give a gift or card at all.

Entirely up to you. My opinion, and if due to covid there is a number limit allowed to an indoors venue and the ceremony is outdoors it would be different.... If they aren’t close family you should be glad for getting at least an invite to the ceremony and if you can, make the effort to go. If they are close, I’d be a little offended for not getting an invite to the reception I’d be inclined not to attend. And yeah, I’d just be sending a card .