* ¡Bienvenido a Venezuela! (Formal and polite)
* ¡Bienvenidos a Venezuela! (Formal and polite, plural)
* ¡Sean bienvenidos a Venezuela! (Formal and very polite, plural)
* ¡Bienvenido! (Informal, for one person)
* ¡Bienvenidos! (Informal, for multiple people)
You can also use more informal greetings like:
* ¡Qué bueno que estás aquí! (It's great that you're here!)
* ¡Me alegra que estés aquí! (I'm glad you're here!)
The best way to choose depends on the situation and your relationship with the person you are greeting.