Should i be upset?

So I’m getting married on Saturday. This isn’t my first wedding nor is it my FH. We have 7 kids between us. Yesterday, I drove over 7 hours (round trip) to get his 3 kids so they will be at the wedding. His best friend and another friend drove around 11 hours to get here early yesterday. They were able to spend about 7 hours together before I got here with his kids even. Our wedding isn’t just a Saturday event. It starts Friday night when our guests come in for dinner even. Tons of planning went in to making this weekend a party. We will have boating and jet skis. Tons of planning for all details as you can imagine. Anyway, the reason I’m creating this is because I was informed by his best friend that they are taking my FH tomorrow night for a bachelor party. Ummmm...what? I guess I feel like I have less than a 24 hour notice about this and I’m going to be stuck here by myself watching all the kids and getting everything put together by myself now. Also, he doesn’t get to see his kids very often (sometimes for a few hours a month and not even all 3). In case anyone is wondering I am not having a bachelorette party because my friends didn’t plan it but they live far away as well and couldn’t take that much time off to do it. I wouldn’t have been upset if it wasn’t right before the wedding and the kids weren’t here. My anxiety is already high and I’m not even excited about the wedding anymore. I should also mention they guys went to Hooters and spent a couple of hours together drinking already as well. That didn’t bother me at all. I was totally fine with it. Am I making a bigger deal out of this then I should be? I just feel overwhelmed and feel like this is going to create more anxiety and I’m going to be pissed that I’m doing this all on my own now.