[quote girlmom21]@Gonnagetgoing firstly, I've already said it's not something I'd do. I've successfully toilet trained a toddler. She's never used a potty in a restaurant.
Secondly, you've just said the child should tell the parents they need the potty - which is what they did.
Thirdly, some children, especially when first starting out with potty training, won't be able to hold it to get to the toilets.
Finally, pull ups are counter productive. You don't stick your child in a nappy to save you the inconvenience of having to take them to the toilet. [/quote]
@girlmom21 - I'm not going to answer your points one by one or go through parenting tips with you, as you seem to be quite the expert here. 
But it seems from your views here (you seem quite snippy in general I've noticed here sometimes, even towards me) that you see no issue in doing this even though you haven't ever done this with your own toddler. Most of us don't approve of it being done in public. I'm quite within my rights to state this and the reasons why.
I still don't think it is right to whip out a potty to use in a restaurant even with a child telling their parents it's ok. The only reason/scenario I could ever see it was ok would be if the toilets were broken/out of order or the child was very ill. Even then, to plonk your child on a potty is disrespectful to other diners and also to your own child by letting other people see them (modesty and also paedophiles etc).
Most children, even with SEN will be able to hold it to get to the toilets, or can be trained to, unless they have a bladder issue/infection.