On the way to kareri you will find a lot of local shops along the trail from where you can find eatables like biscuits, maggi and a hot cup of tea. During monsoosns these shops also offers raincoats and rainproof shield but It's always best to carry your own beforehand. We encountered a heavy snowfall on our way to kareri and that halted our trek for around 1.5 hour. At one moment I wasn't not sure whether we would be able to continue further or not but the weather at mountains is really unpredictable and sun started to shine again. Then in an hour sun disappeared again and the whole forest hid in the dense fog and It was giving a beautiful view of the trail.