I'm after a bit of advice about Summer holidays. To set the context - I've been with DP for 3 years. We don't live together (I'd rather not for the meantime as I'd really like to focus on my DC - I work full time so time with them is quite limited). I have one DC (14) and partner has one DC (9). We have our children on opposite weekends, which isn't ideal as we get zero child-free time together, but that's the way it is. My partner has his DC every other weekend, and a few nights in the week for dinner.
My partner's DC has activities on every weekend (think sports). In fact they have so much on there is literally never time for them to do anything else. This has resulted in me actually not seeing his DC very much at all over the last few years. My DC hasn't either seen them either apart from on the odd occasion. Partner has very good relationship with mine.
DP has asked me and my DC to go on a week's holiday abroad in the Summer. I spoke to my DC and said they don't mind going, but said it may be a little weird as technically we don't know his DC very well, and after spending next to no time together, it may be a bit much them spending a solid week together.
I have brought this up with my partner as I don't want either child to feel uncomfortable, but he has said I'm being silly and the kids will be fine.
Am I being unreasonable? Obviously a holiday would be lovely but I don't want the kids feeling awkward... 