Congradulations on the newest addition to your family.

You could always mail the razor (especially if you have multiple) and some of the gear a few days before you head out especially if you know the people (as you do in this case). If you are going to be staying at a hotel during your stay try calling in advance and see if you can mail a package to yourself there and if they'll hold it for you.

I personally don't travel much but I have recently gotten a DE razor on the off chances that I'll need to (and also for times when I need a quick shave) since there is no way I'll be able to go back to using cartridges after spoiling myself with a SR.