Take your own vehicle. If you own a vehicle and don't have a problem with a road trip then you can definitely do that too. Getting your own vehicle will definitely make the whole trip more convenient for you. ... The road to Rann of Kutch is really smooth and doesn't have many obstacles. you can check the whole details about food stay etc. by the link given below.
Own car is also a good option. for stay many resorts are there other than govt tents. you can easily find online and contact directly there. also do some bargain. I just booked my stay for January at Rann Rajwadi resort. also like this namely toran resort, Rann homestay. keep in mind the distance from Rann. depends on the cost of resort. Don't expect for fancy food there. you will have typical Gujarati food so be prepare and enjoy local cuisine.