Not sure why anyone would take ordinary soap on holiday with them unless staying on a campsite, as hotels have soap in the rooms, unless staying in some ropey doss hole in Kings Cross or something, where the lack of soap is the least of your problems… When off on my travels, if staying a night or two, I take a cheap shaving cream like Palmolive or Arko, a small amount of decanted Proraso pre-shave, a cheap brush like a Yaqi synthetic, a cheap Turkish copper bowl, alum block, a tuck of blades, a razor guaranteed not to do me any damage like a Muhle R89, and some decanted balm. If staying more than a few days, I’ll end up taking two or three razors (as I’m indecisive) and maybe some better quality gear, depending on the chances of things getting damaged or lost. And some aftershave if the other half is with me! Actually, if I’m staying a few days I end up taking too much shaving stuff and not having enough room for other essentials….