no have 90 day visa turisti visa.. you have 90 day for enter Thailand from the date visa its issued, then you get stamped in 60 days and you can get 30 days extension at immigration for 1900 bath..
and if you want go out Thailand some days and come back you can buy a re entry permit for 1000 bath at immigration or airport and your visa still be valid till the date you get stamped in when arriving thailand
I'm Swiss and I'm here with 2 month tourist visa now.. issued in Basel for 40 chf.. I think you see the multi entry visa for your amount you talk about
I came back this year with all papers... form tm30 tambien ban ecc and they want nothing only passport and 3 minutes later update was done.. Ok korat no much people same jomtien