Hi dkw,
I had two sets of tonsils taken for biopsies (palatine and lingual). Initially my 1st ENT took both palatine tonsils explaining that I didn't need them anyway (it makes sense to take both based on that logic). After a 2nd opinion I ended up at Johns Hopkins and had the cancerous lymph nodes removed (selective neck dissection) along with the lingual tonsils.
I won't sugar coat this but a tonsillectomy as an adult is NOT fun. It's about two weeks of hell. Check this site for info on recovery. It was spot on!
http://tonsillectomyrecovery.com/ (The recovery days link gives you 1st hand experiences day by day). My advice is to make sure you take pain meds and stay ahead of the pain even if you have to wake up to do so.
Good luck with everything! Positive thoughts and prayers that everything comes back clean!
"T"