A month!? Lucky her!
I went with Exodus too..for 16 days. Walk was not at all hard (for me) as we went with a very leisurely pace. That is to acclimatize ourselves; we approached Annapurna over many days going up and down. There were awful lots of stone steps . And so, don’t forget to take walking poles to support your knees. I suffered headache from day one in Kathmandu, it was not because of the altitude but due to the lack of sleep on overnight flight
. I had to ask Sherpa for more paracetamol. Oh, take a mask as Kathmandu is terribly polluted with the heavy traffic. Traffic polices wear masks. I had to cover my mouth and nose with handkerchief tied to the hat.
We walked in tropic countryside up and down the steps most of times but in the last 2 days, suddenly, snow fell, blizzard was blowing around the MBC (Machapuchare base camp) and deep snow built up to Annapurna Base camp. On the other hand, there was a lovely hot spring at the foot of mountain too. And so take your swim suits, shorts, T Shirts and dawn jacket and gaiters! (I went from end March to early April)
Sherpa worked very hard, but always with smile and were very helpful