You will encounter some rocky sections. Sun screen and sunglasses suitable for your needs. Nibble-food such as hard candy, crackers, dried fruit. It can happen even in the summer. Plenty of water.
Fire building is discouraged.
Do not cut off switchbacks on designated trails. Wash away from water sources and use biodegradable soap. Pack out more than you pack in. Remember you are a caretaker of the mountains, not a despoiler. Use common sense to preserve future enjoyment.