ask the embassy that you are going to for the requirements. It's ill advised to get that kind of info here as it may differ between embassies. I would advise you to take your wife on a trip with you to the embassy, that way you're more certain.
If you have assets in Thailand you must have a Thai will. In this will you replace all previous wills, thus curting out your ex. Your home country will is not valid in Thailand and your Thai will is not valid in your home country.
thank you. Do you know if they submit to the MFA as well? Apparently the MFA has a daily quota and if the agent can submit it will save me soending days in Bkk.