if you don't run at all you'll loose a little if you can keep running 3 days a week most weeks but without a long run you will be fine. If the holiday isn't for the whole of the time just enjoy your holiday then come back and taper, maybe add a little extra intensity to some of the shorter runs but nothing more than that.
Carry some solid food to eat as soon as you finish the run? Eat it irrespective of if you don't feel like it and see how that goes? Sounds like you just pushed yourself hard and need to eat, sometimes we make to much fuss, and a simple thing like eating even if you don't feel like it is a quick and easy answer.
It seems a bit risky, yes it might be fine, but if so it will be something like at best your first week back, maybe a gentler introduction? I'm not very good at coping with small injuries, and end up half the time tweaking a muscle almost straight away when back running because I've not built up again slowly enough.