
I had the same problem last year, my sister said she would have them, but I know she works full time and with two young children can be a bit pre-occupied and scatty.
I decided to put them into kennels for my piece of mind more than anything, I knew they would rather be at my sisters, but I would have worried incase they had got out and had an accident.
I don't regret this, they were looked after well and on their second visit they both pulled the kennel hand to get to the kennels. (To think I spoiled my holiday thinking they would miss me :()
Hope this helps
Sandra