Ok...Been there done that....
Just wanna add about this topic incase somebody else would want to know. I stayed at the Sepang Beach Resort in Teluk Ramunia. Price for the weekend is RM150. It is a chalet run by a Malay and lots of Malay stay there. I went pass few other chalet as well. The Sea View Resort only has villa's type of accomondation and the price is RM290 for weekends it have 2 rooms and kitchen & utensil facilities. Then there's Sunrising Beach Resort which is fully book by the time I get there. Seems like lots of people stay there. There's even a bus!
Teluk Ramunia beach is not as good as Desaru. Its not as white and deep. The sand is quite brown and the sea is very shallow especially when its in low tide.
From Teluk Ramunia to Sungai Rengit is about 7KM. Nice view on the way to go there too. There's an ostrich farm and we did went there. RM10 per adult and RM6 per child and it comes with a guided tour. The ostrich is around 400 so the farmer say and I do believe him. Lots of ostrich there. A very educational and fun tour. We tried the ostrich Satay which is quite good but expensive (RM7.50 per 5 pieces = RM1.50 per piece).
Lobster in Sungai Rengit is not as cheap as I think. Maybe we order the wrong kind of lobster. RM100 per kg. We should order the mini lobster but I think we order the big lobster. I do saw the price list and the smallest lobster is RM75 per KG. I wouldn't know if they're cheap or not coz its my first time eating lobster. And yes the restaurant that I went is halal. Even got pictures of Johor Minister eating there. We ate in Jade Seafood restaurant.
In conclusion, my weekend trips is quite ok though if only we stay in better beach chalet, it will be wonderful.