I will prefer true. Unlimited 20mb internet with voice etc under 500 month. My use is somewhere 200-300Gt monthly and ais etc do not work reasonable rates..
Visa or ticket.. "possession of an onward or return airline ticket do not require a visa to enter Thailand" You wouldn't be the first to be banned from entering Kingdom, even if the airline company had swallowed the explanations.
Buy ticket and come here. Don't know system there but get address to you from your child etc and keep US phone number if pensions etc need handle back states.. you stay alive nice here if you have 1000$ monthly income. Visa is easy and cheap if you have 800.000baht to deposit thai bank or sufficient monthly income. If you come pattaya we can help you what we have time. We work here.