Hello, It's exciting to hear that you're planning a trip to Tulcea, Sulina, and Sfântu Gheorghe. Here are some tips for your journey:

Best Time to Visit:
The best time to visit these places is from late spring to early fall (May to September). This period offers the most comfortable temperatures and availability of outdoor activities.

Route and Accessibility:
To get to Tulcea, you can fly into Bucharest and then take a bus or train. From Tulcea, you can take boat services to reach both Sulina and Sfântu Gheorghe.

Accommodation and Booking:
There is a decent range of accommodations available in all three locations. It's best to book your accommodations in advance, particularly if you're planning to visit during the peak travel season. Online travel agencies, as well as directly contacting the hotels, can be used for booking.

Clothing and Essentials:
As the weather is mostly mild during the best time to visit, pack light clothing for the day and layers for cooler evenings. Outdoor gear is recommended if you plan on doing lots of walking or hiking. Don't forget essentials like sunscreen, insect repellent, and a hat.

Health and Safety:
Romania is generally very safe for travelers. However, it's always wise to take basic precautions like safeguarding your belongings and avoiding isolated areas at night. Take out comprehensive travel and medical insurance before you travel.

Local Etiquette and Respect:
Romanians are known for their hospitality. When meeting locals, a firm handshake is the common greeting. It's respectful to say 'hello' ('Buna') and 'thank you' ('Multumesc'). Avoid controversial topics such as politics.