You'll need a certificate of residence from your local immigration office. The DLT will renew for 2 or 5 years, as depends if they've read the memo or not.
There is a a suggested guideline of 2 visa-exempt entries per calendar year, unless you can convince the IO that you are a genuine tourist. I think the poster will fall into the latter category
I think it was a French guy who had his passport stolen in France. He got a replacement passport but they wouldn't stamp him in with his DTV. There was no follow up, but would be interesting to see what happened.
I did this a few years back. Just make sure you get to the airport early as you need to be at the front of the queue so you can get through passport control before midnight.
1/ Funds must be in your personal account with instant access. Investment funds are not normally accepted. although it can be in more than one account. 2/ You cannot apply from within Thailand 3/ I applied in the UK and it took 21 days
When you check in at a hotel they ask for your passport which they photocopy so they can register you online for the TM30. If you are in private accommodation you will probably need a printout but in a hotel immigration can see the TM30 online