Planet, don't second guess yourself. Get your time with the kids, period. If it's not fair to you, get it changed.

My XW1 got with OM, and started demanding more time, wanting to switch days, etc - all because she wanted them to see OM. I caved at first because I didn't want to upset her, but then I finally was like, "No, these are my kids too". She called to switch a New Years holiday so the kids could stay up and watch the ball drop with OM's kids. I said no. She FLIPPED out, was ranting and cursing, and telling me how she was gonna get full custody, and take me for everything I had. I listened for about 15 seconds, and then just hung up. She called back about 50 times, and I ignored it. I remember literally shaking in my boots, sure I had ruined everything. The very next time she called me she was super sweet, offered to trade days so I would still get equal time, and never disrespected me again with the kids.

6 months later, OM's stuff was thrown out on the lawn of XW1's apartment because she found a text on his phone where he said he was just using her for a place to stay.

Stand up for your time, man!