I`m sad to say this,but many pilgrims litter everywhere,and the government can`t do much about it,though it provides large garbage cans,but they can`t collect it,simply because many people are sleeping on the streets,preventing car traffic.
By the 3rd day of hajj piles of garbage is all over the roads.
so be prepared,
take washing eye drops with you.
take antibactirial soap(use it after Tahalol from your ihram).
take dittol wipes.
wear a surgical face mask at all times when you leave your camp.
use anti mosquitoes repellant(also after Taholol from ihram).
Collect all the pebbles you need from Mozdalifah,you will NOT find any at Mina,as everywhere is paved now.
you will need 7 for the first Agaba al kobra.
then 7 for each Jamarah soghra,wostah and kobra 7*3=21(for each day)
so 21*3 nights=63 pebble not to forget the 7 above..
63+7=70 in all.
some people advise in collecting more,incase some one needed pebbles,or incase you dropped yours.
Make sure you know exactly where you are when you arrive in mina.
More importantly know where the emergency exists are from your tent in Mina, as NO ONE will tell you.
In the case of fire, flood or what ever may come your way, God Forbid, you need to know how best to leave the camp site.
Large Emergency exit signs are dotted everywhere and fire hydrants and extinguishers are abundant these days.
What to do in case of flood? Dont know!
Just make sure you always leave your belongings in a sealed bag tied to the inside of tent.