Hello! It's great that you're planning a trip to Charleston, Virginia Beach, and Ocean City. Here are some useful travel tips.

Best Time to Visit:
The best time to visit these coastal cities is typically in the spring and the fall months as the weather is pleasant and these are the off-peak tourist seasons. Charleston in particular is beautiful in late Spring (April to June) when the flowers are in full bloom.

Route and Accessibility:
You can reach Charleston by airplane with Charleston International Airport being the closest. Likewise, Virginia Beach and Ocean City are also easily accessible by air. A road trip, considering the relatively short distances between these locations, could be an excellent choice for more scenery.

Accommodation and Booking:
Each city offers a wide range of accommodations, from luxury hotels to budget-friendly inns. It's advisable to book accommodations well in advance, especially if you're planning a visit during the tourist season. Consider using online booking platforms for the best deals and options.

Clothing and Essentials:
Pack lightweight, casual clothing for these beach towns, including swimwear and beach accessories. Carry an effective sunscreen, sunglasses and a hat to protect yourself from the sun. If you're visiting in the spring or fall, it would be wise to include some light layers for cooler evenings.

Health and Safety:
Follow the general safety tips like not leaving your belongings unattended and sticking to well-lit, populated areas, especially at night. Always observe the flags and signs on the beaches related to swimming conditions. Keep a close eye on weather updates as these areas are susceptible to hurricanes and tropical storms.

Local Etiquette and Respect:
Cities like Charleston carry a rich culture and history. Be respectful towards this and adhere to any site-specific instructions while visiting historical monuments or places. Dress appropriately and follow local norms and customs.