Jeans, t-shirts, the Rings, food, and people. That's all weddings should really be.

Sounds like you will be wearing something else, dropping the gift off later, and buying a new card.

As long as you are dressed up you are fine OP

The post is from Switzerland. Not relevant there.

They won't even know that the gift is late. Besides, proper etiquette gives you a lot of leeway in the time before you send a wedding gift. Are you a bridesmaid / groomsmaid? Focus on the dress. If not, just find a nice dress.

One event in the USA does not affect the general world, as a whole.

The date there is 11/9 anyway.

It sounds like you're having a rough day.

Shockingly, most people's lives don't revolve on an unfortunate event that happened over a decade ago.

Don't worry about the gift. Most people don't take them to the actual wedding anymore, since too many people steal.