Hi Xhe
Walking shoes will be fine. I either wore my trainers or sandals.
My walking pole was actually a "dodgy fold up" walking stick. Walking poles aren't necessary although traders did sell them at the base of the fortress at Ollantaytambo in the Sacred Valley. There were hundreds of stone steps there to ascend the fortress.
I was the only person in our group of 38 who used a stick and no-one used poles.
The only reason I used a stick was because I had two full knee replacements 4 years ago and I was scared of falling and damaging them, being not the lightest of weight either doesn't help me.
Clothing wise Dave is spot on. Don't let the weather in Lima surprise you, it is foggy and damp there.
The ladies did tend to go for smart/casual in the evenings, when we had time to get changed after long days. I stuck to trousers and a nicer blouse in the evenings but one or two ladies wore dresses.
Food is very reasonably priced. I spent about £500, but I bought loads of souvenirs and gifts.Every photo opportunity for us was a trading opportunity for the Peruvians..
A shopper's paradise. Lowish prices and you had to haggle.
The exception was the Uros Islands on Lake Titicaca. The handicrafts on sale such as replica reed boats and cushion covers were quite expensive. The absolutely beautiful and colourful hand embroidered cushion covers were almost £50 each.
Children in traditional clothing, with alpacas or llamas in tow expected a sole each if you took a photo. One sole equals approx 25p.
So the amount of spending money is quite an individual thing.
There was nothing I didn't take which I wished I had.
I did take my travel kettle and some coffee sachets, which I found useful.
Anything else you wish to ask, I will try to answer.
Have a super holiday!!
Kind regards Di