How horrible will the effects of three cisplatin treatments be?

Wife to 58 year otherwise very healthy husband(and the sweetest man in the world). T1N2b SCC. June 2012 TORS Tonsillectomy/mod neck dissection and 10 lymph nodes removed. Path showing 3 bundled nodes, slight ECE. IMRT 30x and Cisplatin 2x. PEG for 10 wks. CT 12/12,2/13,5/1 3,9/13-allclear