Give yourself a day or so to go to the bank (or you may need to go to more than one) to change your cash into small notes. Yes you’ll end up with a brick of cash, but some places along the way won’t be able to change the bigger notes.
If you can spare the time. Get the bus to Jiri and walk to Lukla. It’s a great section of trail that is hardly used since the airport was built. People were so happy to see us in the tea shops/bunk houses, and the food along that section of trail was the best by far.
Having witnessed the crash in the video above first hand I was glad we hadn’t flown in, what it doesn’t show is the 12 or so guys and 2 ropes they used to clear the plane from the runway…. however we chose to fly out and our plane took off about an hour after they extracted the crashed one from the wall!
Finally, again if you have the time, come down to lukla via Gokyo and the sacred lakes. Stunning bit of trail, fewer crowds the main Everest route and the lakes (all slightly different colours) are stunning.