Hi Moni foto,
We have traveled all around southern africa and Etosha is still one of our favourites - we have spent a total of 4 weeks there over the last three years.
The rest camps are a little disappointing in term of staff, accommodation and food. They are also relatively expensive - even to camp. The value of them - in my view - is:
a) their location - gate times in Etosha are essentially sunrise and sunset - staying in camp gives you precious extra minutes at the magical times of dawn and dusk.
b) Okakeujo and Halai have waterholes on site. This means you can take a bottle of wine and a blanket (in the cooler months) and watch the action unfold. Last time we were at Halali there we spent literally all day and most of the night at the waterhole. We saw herds of elephant, a group of 4 rhino, hyenas taunting the rhino, a leopard and more.
c) the opportunity to do a genuine night drive. Not that many "public" reserves offer night drives and those that do usually end by 8 o'clock or so. At Etosha you can do a drive that starts at 8 and ends at 11 - and have a good chance of seeing some really interesting night action. It is contraversial - some experts think it disrupts nocturnal animals behaviour - but is an amazing opportunity for wild-life enthusiasts.
I would stay at Okakeujo and Halali. Namutoni doesn't have a waterhole. Re the "splashing out" my honest opinion is that none of it will really wow you for the money. You'd probably be as happy camping but if you're keen on a roof and four walls I'd suggest Okakuejo which has better facilities and accomodation around the waterhole. If you really want to treat yourself (and this is in a totally different league) check out the new luxury camp Onkoshi. I have seen some good deals on this so you may want to try your luck and see what you can get. It's in a little visited but fabulous area of the park.
At the eastern end of the park we always stay at Onguma outside the park. Though it is hard to find on their website they have a great campsite - six "sites" all with private bathrooms and you can eat in the Bush Camp restaurant which is lovely.
When you stop off to get your permit ask to see the sightings book - it will give you a good idea of current hotspots. My favourite waterholes, west to east, are Nebrowni (regular lion and old bull elephants), Gemsbokvlate (huge numbers of plains game and often predators), Olifantsbad (elephants), Kalkheuwel (anything), Chudob ( anything), Andoni ( an amazing area of the park - make the effort to get here). Don't rush in and out or you will miss stuff. We have sat watching lions stalking a waterhole with loads of cars driving in and out because they don't spot anything on the first glance. We have even seen people get out the car metres away from a lion they haven't spotted. Pick two or three waterholes for the day and take your time.
Re booking you will probably be fine , certainly with camping, at that time. But you can also usually book and pay a small deposit (10%) if you want a bit of certainty.
If you want to whet your appetite check out some of our pictures under Namibia at www.off2africa.synthasite.com.
Enjoy it!