You asked if I would be upset and the answer is no. You are together. 2 kids and an adult and an adult and 1 kid. I don't see where the problem is. We have been split up a lot more than that.
You should be very happy they were able to get you that together. you may have ended up with 2 together and then single seats all over the place.
Just make sure each kid has their own snacks and things to occupy themselves in their own back pack so if there is another change there will be no problem with them sitting apart.
And it isn't just Delta they all do it. I wouldn't fuss at the airport I'd just take the seats the way they are and have a good flight rather than getting all worked up and starting the vacation stressed.
You should be very happy they were able to get you that together. you may have ended up with 2 together and then single seats all over the place.
Just make sure each kid has their own snacks and things to occupy themselves in their own back pack so if there is another change there will be no problem with them sitting apart.
And it isn't just Delta they all do it. I wouldn't fuss at the airport I'd just take the seats the way they are and have a good flight rather than getting all worked up and starting the vacation stressed.