Planning to come to Thailand very soon, decided to apply for electronic visitor visa, but it asked for flight number and accommodations which I don’t have either yet(was planning to travel to different destinations, and just book mostly last minute through booking .Com)now I’m thinking I just will get visa exempt for 30 days, and extend another 30, I was going to book a flight and stay 56 days? 
Any advantage to continue  and get visitor visa? 
TLDR : Answer Summary
The user is considering traveling to Thailand and is unsure whether to apply for an electronic visitor visa or to enter using a visa exemption for 30 days, which can be extended for another 30 days. The discussion highlights the pros and cons of each option, with several commenters suggesting that the electronic visa might save time and hassle, as it avoids the need for a trip to the immigration office for an extension. It is recommended that if the user plans to travel continuously without a firm itinerary or accommodations, the electronic visa may not be necessary. Additional considerations include the requirement of a departing flight ticket when entering Thailand, which may complicate visa exemption plans. The user is also concerned about the processing time for the electronic visa.