Luggage and bags: Have no idea what to say here...:))
Clothing/Shoes/Weather Gear: Well, my tips will be for the people who come here in the summer time...I advise you bring very light clothing and shoes, but also an umbrella and something warmer for the nights...you never know. The main thing is that when it gets hot it's also very humid and be ready for some places without AC. And do not forget the swimming suit, cause if you do, you can always buy one here...:))
Toiletries and Medical Supplies: You can find almost anything here in any pharmacy or supermarket so the best advice would be not to load your bag with stuff like that unless there is something you just can't live without!
Camping/Beach/Outdoor Gear: Most of the beaches now have chairs and umbrellas to rent, bars and anything you need.
Clothing/Shoes/Weather Gear: You MUST bring fine clothes suitalble for nightlife. With a bit of sexy look (all Romanian women wear sexy clothes when they are at th sea-side, and especially young women).
Don't forget to take light shoes like slipers and/or sandals, you will need them when you take long walks in the city or go at the beach.
OF COURSE SWIMMING SUIT!
You may have good clothes for rainy weather. It happens, not often, but it happenes.
Toiletries and Medical Supplies: Don't even think to go there without cream/oil for protecting when you have a suntan. I recomend even use it when you go walking in the daytime, otherwise in the evening you can find yourself with a burned skin.
Also have some pills for stimach problems. Not being used to local cuisine can give you some trouble.
Carry with you all the time a botlle of water or juice. The weather is very hot in the summertime. If you're not suficiently hidrated you can feel sick very easily.
Photo Equipment: Don't worry, you'll find all you need all over the city, even if you didn't bring any.
Camping/Beach/Outdoor Gear: A bit dangerous. I won't recomend camping in a tent for a foreigner. You risk havin your things stolen. You can go camping in special places arranged by private people. It's more safe than the public ones.
Luggage and bags: take empty duffel bags for the souveniors you might want to buy since the exchange rate is so good.
Clothing/Shoes/Weather Gear: Walking shoes for sure. Rain coat. then typical warm weather clothes.
In the discos it is retro 70's style usually.
Toiletries and Medical Supplies: Bug spray!!! Make sure you take basic things so you don't run out such as toothpaste, tampons, contact solutions, etc.