i received a tripple entry visa and arrived on 12.09 in bkk airport.

first stay i plan to stay only the premited time 10.11

then i go 2 weeks out

after i want stay 2 month and 1 month extention for 1900 bhat( because my parents come to thailand,sure same for last time).

after i go on a outbound trip with my parents

and come back withe the 3rd entry for 2 months and ventl. 1 month extention

still immigration make the extencion of the visa????

is this visa even not valid more????

or can i go on with this plan???

You should be fine as we have heard the rules sofar. You already got the triple entry visa. And have heard no changes in rules of extension of same either.

Fear is that NEW applications at Thai embassies will be of the single entry type - or even rejected of too many VOA and/or tourist visas in the passport. We will see that in the future.

Cheers!