Honestly how would you feel if he said no to you taking little one on holiday? In the U.K. if he has parental responsibility you both get to make these decisions and both need to give permission to the other If he’s a good dad and your only issue is you want to be first etc then I think you need to accept that this will happen Ultimately he is a parent too and he’s allowed that time with his son Unless you have safeguarding concerns you need to accept it happening sorry
Unfortunately you just have to accept it, he’s the child’s father he has just as many rights to want to do these things as you
For his first holiday I would invite his dad
I think it’s the new normal. Regardless of whoever takes him on holiday first, the other parent will miss out but that’s okay. Is he a good dad? As long as baby is happy, healthy and safe I think it’s just something that will become the new way of life coparenting. Dad will probably feel the same when you take him away too ❤️ Personally, I would allow it because it sets the standard for coparenting. Trust, acceptance and prioritising baby’s happiness. Maybe take that week to do things for you, book some appointments and do things you’ve missed out on like the cinema etc. Set some expectations though like daily check ins and photos of him having fun, that way dad knows it’s 2 ways of communication too in case he needs your support a bit xx