sure/decided

[beachboy]

I insist that you come to my party on Saturday
I insist on your coming to my party on Saturday
I´ll make a point of going to your party on Saturday.
What if I´ve decided to wear the the most expensive suit to the party, (maybe) so that the other guests will envy me, and nobody will talk me out of doing that? How can I convey this idea of being sure and decided?
I __________________________ to wear (of wearing) a very expensive suit.

[rx-f]

What's your answer and why?

[beachboy]

I think I insist on wearing... wouldn´t fit here, and I wonder if I´ll make a point ... would just be the thing... In other words, there is an expression in Portuguese - fazer questão de, and I´m trying to make sure the best translation for it in English is to make a point of.

[bhaisahab]

I think I insist on wearing... wouldn´t fit here, and I wonder if I´ll make a point ... would just be the thing... In other words, there is an expression in Portuguese - fazer questão de, and I´m trying to make sure the best translation for it in English is to make a point of.

"I'll make a point of wearing..." would be fine.

[Raymott]

I think I insist on wearing... wouldn´t fit here, and I wonder if I´ll make a point ... would just be the thing... In other words, there is an expression in Portuguese - fazer questão de, and I´m trying to make sure the best translation for it in English is to make a point of.

A stronger statement would be, "I'm determined to wear this suit."
This satisfies your criteria of 'having decided' and 'being sure'.

[beachboy]

What if I want to order a cake, for example, and nothing, including the taste, is important, but the only thing I won´t give up is the cherry on top of it?
I insist on a cherry? I´m determined?

[TheParser]

What if I want to order a cake, for example, and nothing, including the taste, is important, but the only thing I won´t give up is the cherry on top of it?
I insist on a cherry? I´m determined?

********** NOT A TEACHER **********

Hello, Beachboy.

(1) How about:

I insist on having a cherry on top.

I want a cherry on top, and I will not take "no" for an answer.

It is imperative that there be a cherry on top.

I will settle for no less than a cherry on top.

A cherry on top is my absolute bottom line.

A cherry on top is an absolute must.

Thank you.

[Raymott]

What if I want to order a cake, for example, and nothing, including the taste, is important, but the only thing I won´t give up is the cherry on top of it?
I insist on a cherry? I´m determined?

I'm determined to have the cherry.