Fiancée's Visa Application to Poland

Hello,

My fiancée, who is a Polish citizen, will send me an invitation so I can apply for a visa. We have been together for three years, and I proposed to her this summer (she said yes!). However, after reading information from this sub and other sources, I am unsure if our "engagement" status will negatively affect our visa application.

We plan to meet in Krakow and have a romantic winter holiday in Zakopane. However, I have a few questions:

Should I write a letter and outline a detailed itinerary?

Should the visa application be based entirely on the length of our holiday, or is it possible to request a duration of 1-3 months?

Is it beneficial or detrimental to provide information about our relationship? If necessary, we can include photos from our three years together, especially those with the engagement ring.

Should the visa be a single-entry or multiple-entry visa?

Are there any other aspects I might have overlooked or need to pay attention to?

ps: I 'am a Turkish Citizen if it matters!

thanks in advance!