Ordination and support from parents If one intends to ordain, say in Thailand, and one lives in India - would it be right/moral to ask support from one's parents (since one is not yet ready/able to support oneself)?
If they support you then it is OK.  You should ask for support according to their faith and ability.
Normally supporters and family are the same words in pali.
It is listed in the Metta sutta as family "kulesu", often translated as donors.

However, one should live a modest life and ask for only what one needs.  Asking for sangha needs is much better.  It depends on your family's desire.
There could be a problem with receiving donations from your parents if you gave them money beforehand.  I am not sure of the exact details.

While I do not know the exact rule for this, I do remember asking about this with a monk who gave his parents money and then asked for a computer specifically saying, "Use the money I gave you.". The teacher (Sayadaw U Kovida, paauk) said this would be unallowable. (This transaction never went through, by the way)

To avoid a situation like this, if you do give your parents your money, you should say,
 "This is yours, use as you wish."
Or "Do not use this for me or to monks."
Then when you ask them for things, whatever they do, it is their money and donations are from their own doings.

It is actually legal for them or even a bank to have money for you as long as you do not use it.  This is how one ordains temporary in a vinaya tradition.  If you decide to stay full time, things can get complicated with bank accounts (if you are one who cares about vinaya). Some need to temporarily disrobe to handle their affairs.
According to ratapala sutta, he told his parents to throw the money in the river.