Few questions - shopping, weather, Taobao

Hello everyone!

I will be going to SH 14-17 June, second time. There are a few questions that I would like some advices for, I will number them.

1) Taobao - I'd like to order mainly two luggages, everything is set, all I need is to pay. I've gave the hotel's address and my own personal phone number. How far in advance should I reach out to the hotel so they can receive my items? How does this work?

2) Weather - When it comes to hot and humid weather, I am dead - white skinned European that burns, instead of tanning. I will be preparing some light clothes, shorts, sunscreen, handheld fan and bought cooling wipes from MINISO last time. What should I expect? Baseball hat will be needed too?

3) Shopping - Already found my go-to places where I would like to purchase a few items, and I stumbled upon an International Glasses Mall. Has anyone had any experience? Mainly interested in the price - couldn't find info online.

I've already have AliPay set up, WeChat, AMAP, eSIM and I know my way from the airport to the hotel as I will be staying in the same as before.

Also is if there is ANYTHING else I need to know, please tell me.

Thank you so much for your insights!