I haven't been to Nepal but walked hours in extreme rains many a time. a good quality rain jacket and a pant along with fully water proof shoes to cover yourself. I do not use dslr during the rains, so can't suggest, however phones are generally water resistant these days and I have used them without any issues. let me know if you want know the brand of shoes and raincoat i use during rains
You are so right. Laws are only made/amended when some emergency occurs. The real laws are made my people and this is an issue that needs compassion for living beings. You cant teach that, its intrinsic.
Scenic beauty and the thrill to be on the top of the peak and realizing the God's work put in it... There's always a peak bigger than that, so aim for that then