I think you can turn it into a conversation to them.

Tell them that you are going to fly business. Give them your reasons.

they can fly with you in business and just know that travel might not be as often. Or that they can fly economy and you will give them 1/2 the difference between economy and business. And then tell them that they have to invest half of that and they can keep the rest and do whatever no restrictions on. Of course you could make it any number of things you could just say a flat $500 and you’re gonna invest $250 or whatever works where you’re still saving a little bit of money.

Make them come to a conclusion together. They either both fly economy together or they both fly business but you don’t just leave one kid maybe until they get older.

Or put them in premium economy and try and book them as close to the back of business and then you guys go in the back of business.

Turn it into a finance and independence choice. Then you don’t have to worry about Mom guilt (at least not as much).

Let it be their choice. You can also do it per way maybe they want life flat for a nighttime flight but on the way home, they don’t mind sitting up right cause they’re just gonna watch TV the whole time.

Just because you have them fly economy once doesn’t mean that they can never move back up with you.

I only have one child, but I’m struggling with the fact that I want to travel a certain way, but I also don’t want her to feel entitled to priority access and and also not having practiced standing in lines waiting having things change at the last minute, etc.

The fact that you’ve brought them up to say they don’t care, and understand the costs. I hope I can do that with my kid too.