Phan Rang - Thap Cham is considered generally safe for solo female travelers. As with any travel destination, it is advised to remain vigilant, especially at night, and be aware of your surroundings. The locals are friendly and willing to help out if required. Petty crimes like pickpocketing can happen, so it's important to keep your belongings secure at all times. As for the cultural norms, women are respected, and there are rarely any issues of harassment. However, learning a few common phrases in Vietnamese can be handy for a more pleasant travel experience.