I too had a similar experience, my oncologist originally told me no chemo and then they found results that inidcated my cancer was aggressive so chemo was required. Also through my CT scan they found I had a tumour in my kidney so chemo may help shrink that.
Like you I had moved past the thought of needing chemo so was completely thown by the requirement.
Unlike the lovely Robyn I had major issues, but I do think that is not the norm, most find the 4 rounds of TC alot more doable.
Enjoy your lovely holiday, what a great thing to do before treatment starts.
Sending you hugs
Donna