Learn Italian: Il banchetto lo organizzo io, ma il cartello lo scrivi tu. - I'll organize the stall, but you write the sign.

Placing the subject pronoun after the verb puts a strong emphasis on it, which is called contrastive focus. It perfectly highlights the contrast between the two roles: I am doing this part, but you are doing that part. In spoken English, you would achieve this same effect by heavily stressing the words 'I' and 'you' with your voice.

Why is lo needed in both halves? Doesn't Il banchetto organizzo io make sense on its own?

You need lo because this sentence uses a conversational structure called 'left dislocation'. When you pull the direct object (il banchetto or il cartello) to the very front of the sentence to make it the main topic, Italian syntax requires you to add a matching pronoun (lo) right before the verb. It translates literally as 'The stall, I organize it...'

The translation says 'I'll organize', but organizzo is in the present tense. Is that normal?

Yes! Italian frequently uses the present tense to talk about the near future, especially when making plans, dividing up tasks, or talking about firm arrangements. While you could use the future tense (organizzerò), the present tense is more natural here and makes the decision sound immediate and certain.

I thought banchetto meant 'banquet'. Why is it translated as 'stall'?