Uninviting guests due to COVID

[reservoircats]

Our wedding is planned for end of October. We originally had 100+ guests for April, but we are now at the point where we need to start messaging guests that are not "high priority" for want of a better word that we can no longer accommodate as we have to cut numbers down by over half.
Has anyone in the same boat done this and what exactly was the wording you used?
Or if anyone has any ideas on wording that we could use, I would be most grateful.

I was uninvited to a wedding recently, I wasn't upset at all, as I hadn't been expecting to be invited in the first place.

I got an non anonymised version of the below:

Dear X,

As you may have noticed, coronavirus has changed the rules somewhat for weddings! We are very grateful to be able to go ahead with our wedding service on Date with 30 close family and friends as guests. Unfortunately, this means that most of the people we wanted to celebrate with won't be able to come. We're gutted you won't be able to attend, but we hope you will be able to join us for our 'second wedding' on Date 2. We will have a blessing service followed by the reception, hopefully non socially distanced and with all the celebrating we want to do! Thanks so much for your support and understanding. We are so excited to be married in Date, and then to celebrate it with all of you in Date 2. Please save this new date and we will send you more details soon.

Love X and Y

Obviously it depends whether you are planning to have a big party at a later day, but if not you could probably reword somewhat.

That's really nice @Nacreous.
We were supposed to have gone to a wedding last month but the bride and groom have cancelled altogether. If they had wanted to go ahead and keep it to just very close friends and family I wouldn't have been offended in the least.
I wouldn't uninvite by text message (if that's what you meant) @reservoircats, but perhaps a phone call or a little note or card in the post would be better recieved. You could always as nacreous said have a little party to celebrate your first anniversary instead?

Thank you both @Nacreous @Alexandernevermind that's really helpful. We were planning on handwritten notes or calls :)