One's Day. Co

Service levels: Full-service planning

About One's Day. Co

One's Day

Lead Planner

Hi, I'm Mariana, founder of One's Day. For over 10 years, I've been creating thoughtfully designed celebrations where every detail has a purpose. From intimate ceremonies to grand weddings, One's Day offers planning, event design, florals, décor, vendor coordination, timelines, budgets, and every detail needed to create a seamless celebration.

Every celebration is thoughtfully designed around your vision, with a balance of creativity, organization, and attention to detail. From the overall concept to the smallest finishing touches, everything is carefully planned to feel uniquely yours.

In three words: Confident, Positive, Thoughtful

Services by planning level

Full-service planning

Pricing starts at $10,000*

*Plus % of total wedding costs

Partial planning

Pricing starts at $5,000

Day-of coordination / wedding management

Pricing starts at $3,000

Event design

Pricing starts at $5,000

Destination wedding

Pricing starts at $15,000*

*Plus % of total wedding costs

Elopement / microwedding

Pricing starts at $3,000

A la carte

Pricing starts at $1,000

Reviews

Write a review
Rating: 5.0

5.0 out of 5

5 reviews

  • LL

    Lana L.

    Rating: 5
    •Zola
    •Aug 11

    Thank you, Mariana

    Loved working with One’s Day! Party decorations were gorgeous!

    Mariana Kirnytska•Aug 12, 2026

    Thank you, Lana!

  • J

    Julia

    Rating: 5
    •Zola
    •Aug 11

    incredible experience!

    they were professional, organized, attentive and truly cared about every detail. Everything felt seamless and stress-free and we always felt supported throughout the entire process. We highly recommend One's Day. Co to any couple looking for a reliable and talented wedding team!

    Mariana Kirnytska•Aug 11, 2026

    Thank you so much, Julia!

  • KK

    Karina K.

    Rating: 5
    •Zola
    •Aug 10

    Thank you!

    Absolutely loved working with Mariana! She is very friendly, helpful and responsible, recommend!

    Mariana Kirnytska•Aug 12, 2026

    Thank you, Karina, appreciate it!

  • M

    Mariya

    Rating: 5
    •Zola
    •Aug 9

    Best service

    Thank you so much for my birthday flowers and table decor, it was so beautiful!!!

  • I

    Ilona

    Rating: 5
    •Zola
    •Aug 6

    Perfectly organized and designed

    Everything turned out so beautiful and exactly how I imagined it. She was easy to work with, very organized, and coordinated everything with the other team so I didn’t have to worry about all the little details. I was so happy with how everything came together and would definitely recommend her!

    Mariana Kirnytska•Aug 11, 2026

    Ilonka, so grateful to have been part of your wedding day!

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