I inherited quite a bit of money from my dad. at the time I was 6 months pregnant and still living at home. ( baby is now 6 months old ) The money has helped me put a deposit on a house for which we get the keys to on Wednesdays

we have also enough money to get it furnished and decorated.
recently more money came from the estate which was unexpected 5 grand to be exact and I really want to go on holiday with it but DP want to keep it incase we need it while I'm still on maternity. I don't want to use it all for a holiday just something cheap and last minute when the kids have gone back to school.
I know this makes sense and is sensible but my dad loved his holidays and so much of the money I was given has been used sensibly
AIBU to want a holiday ??