If you are staying on the island you generally do not need to take many long trousers or tops because it is very hot and humid of a night time. If you are going to the Orinoco Delta from the island you really must take long trousers and a long sleeve top because you will get bitten.
Toiletries and Medical Supplies: Medication for upset stomachs, although there are some 24 hour pharmacies around. Mozzie spray for the night time and especially for the Delta trip.
Luggage and bags:
Having a knapsack (rucksack) is always handy, especially for the excursions we took. On the snorkelling trip we needed towels, extra shirts, underwater cameras, etc.
Clothing/Shoes/Weather Gear: We brought long pants in case needed for dinners, but not needed at all. It was warm all the time, getting down to about 23 or 24 celsius at night. Also, the other guests ~ very few of them dressed semi-formal for dinner, mostly shorts and a nice short sleeve shirt is what we wore to dinner.
Toiletries and Medical Supplies: We of course brought Immodium (for dysentery) which thankfully we never got; acid reducer in case we needed it (but we didn't) and Tylenol. I needed this to reduce the pain of my sunburn(s). We didn't pack sunscreen or sunburn relief. Highly recommend buying this at home, as the price of them were ridiculous.
Photo Equipment: We brought a couple of inexpensive disposable underwater cameras with us. They worked well for close ups of each other underwater and got a few good shots of sea life, but one would need to get really close to the fish (a lot closer than we did) to get really good shots.
Camping/Beach/Outdoor Gear: We brought a thermal 'lunch box' type container, which was great for keeping our bottles of water cool when at the beach. Plus if you had anything else to keep cool. Just thinking about it now, it would have been wise to freeze one (1 litre) bottle of water [there was a fridge in the room] and by the time you finished one bottle, the other would be thawed but also acting as a coolant.
Miscellaneous: This was our first all-inclusive experience. We had read that it's a good idea to bring thermal mugs with us. This worked out great, especially when we went for an early morning walk, as we filled them with coffee for our excursion. They were also handy when we spent the day on the beach, as we were able to go up to the bar and put two of the small bottles of beer into each mug. This kept the beer cool and saved us going to the bar every five minutes. Obviously this would work well for other beverages :D
Luggage and bags:
Closed/locked bags will be checked more frequent that bags with no lock in customs.
Clothing/Shoes/Weather Gear: no pullover or vest over here!
Toiletries and Medical Supplies: Take something agains diarrhea and headics (caused by the sun of course, not the tequila's :-)
Photo Equipment: Ohyeah, even underwater cameras will do the trick!
Miscellaneous: Sun Oil with high protection factor! Know that this place is close to the equator and the sun is really powerfull
Luggage and bags:
Don't take a lot of luggage - it might not fit in the taxis to & from the airport. We were fortunate to have a van meet us because we had 4 people & 4 suitcases. We could have had 2 suitcases & made life easier. When we went from the Radisson in Caracas (spent 1 night there) to the airport for our flight home we almost had to get 2 taxis 'cuz the luggage would not fit in the Town Car...finally they managed to shove it in. But keep in mind the size & weight limitations of the airlines.
Toiletries and Medical Supplies: There are mosquitos. We did not see them but we felt the after effect of the itching & saw the bites.
Sunscreen! The sun is strong! And apply it often. We saw alot of sun burnt people.
Photo Equipment: If you have a digital camera - get a big memory card because there is so much to take photos of. My son & I took about 700 photos!!!! Don't forget your charger! The electricity is 110 at the Dunes - like in the US.
Take light clothes and confy shoes!
It is summer all year long in Isla Margarita.
For the beach, use flip-flops, sandals and stuff. And wear beach clothes of light fabric like cotton shorts or skirts (it's not easy to put on some jeans when you're all wet and stuff ).
Toiletries and Medical Supplies: You cannot forget sunblock, even if the sun is not so strong or if the breeze and shade gives the impression it is not so hot, it doesn't matter, you might get sunburned.
A good moisturizing is also important, if it is a after-suntan it's even better!
Moisturizing creams can keep you from peeling off or it can be a relief if you're a little sunburnt.
Caladril is good if you are severely sunburnt! But try to avoid that.