Hola Keit_s,
Great to hear that your exicted about coming to Venezuela! Quiet rightly so ;-). Vzla has some amazing places. Please bear in mind that accommodation can be quite tricky to find in the high season and public holidays, especially at beach destinations such as Margarita, Los Roques,Choroni and Morrocoy among many others. If travelling during the low season then you should have no problems finding accommodation.
Los Llanos is definitely a place to observe and admire the Venezuelan Wildlife. You might just get lucky and see a giant green anaconda.
As for beaches, there are some amazing beaches along the Venezuelan coast but perhaps the most spectacular for some is the Los Roques Archipelago which is certainly home some amazing beaches. Nevertheless, it is pretty expensive to get there. Choroni is also an amazing destination, located in the Henri Pittier National Park, it is close to the cloud forest and some very nice beaches. In the town of El Malecon (next to Choroni) there are a couple of bars that you could check out.
Margarita too has a few clubs and bars you could check out but the place to party hard however is Caracas, even though the city is riddled with crime.
If you want to experience a true jungle expedition why not look into visiting the Angel Falls. If your into trekking Roraima is an excellent choice.
If possible avoid renting a car. It will work out really expensive as we have exchange controls in Venezuela and you would have to pay for car rental with your credit card at the official rate.
Hope you find this info useful,
Travel safe,
All the best,
Thomas,
Caracas
berry_venezuela@hotmail.com