Save the Date question

I'm in a bit of a sticky situation. We had initially wanted a destination wedding, but due to lack of response and FH's father's health issues, we canceled that idea and are now doing a local celebration.

When sending save the dates for the destination, we were pretty generous, knowing only about 35%-40% would accept. I also sent a few "heads up" messages to people telling them that we'd be having an at-home reception when we got back. Not an official save the date, but if they were traveling, I wanted to let them know so they could budget for it.

Now that we're doing local, there are a ton of people to whom we sent save the dates that we simply cannot afford. (Long story, but we jumped at a venue because, after canceling the destination, I was paranoid about finding a place in 2020 that also worked with our photographer's availability).

How horrible would it be to send fewer save the dates for our local wedding? I know that, generally, if one receives a Save the Date they expect an invitation. I'm wondering if, etiquette-wise, there's a bit of leeway for the venue change? We have an initial guest list, but we need to cut about 14-16 from an 84 person list. This means that they're are people who received the destination STDs won't get local ones. Or am I obligated to send save the dates (and invites) to these people?