For some, Costco is just a store. For Sebastian and Josie Gonzalez and their two kids, it’s a way of life.

“Everywhere you look in our home you’ll find something from Costco,” Josie told Insider in an email. “Dog food, baby formula, diapers, cleaning products, furniture, decor, shampoo and conditioner, toys … I could go on and on.”

So when it came time to plan their son Mason’s first birthday party, they cycled through a few different themes before settling on the one that felt right – a tribute to their favorite store.


Josie and Sebastian Gonzalez are avid Costco fans.

Foto: Josie and Sebastian Gonzalez.sourceCourtesy of Josie Gonzalez

They each make weekly trips to the store. Sebastian often takes their two children, Madison and Mason, shopping with him on Saturdays, and Josie stocks up on household essentials on Mondays.


For their son Mason's first birthday, Sebastian came up with the idea to throw a Costco-themed bash.

Foto: Guests wore Costco-themed attire.sourceCourtesy of Josie Gonzalez

"Everyone we know is aware of my husband's obsession with Costco," Josie Gonzalez told Insider. "He's a financial planner, so he's obviously all about making smart financial decisions. Our Costco membership is most certainly a smart financial decision."


They hosted the party at their home in Canton, Massachusetts.

Foto: The party in full swing.sourceCourtesy of Josie Gonzalez

"There was plenty of laughter every time someone walked in the house," Gonzalez said.


They welcomed guests with a grand opening-inspired balloon arch.

Foto: A red balloon arch.sourceCourtesy of Josie Gonzalez

The red balloon arch made for a striking display.


And made Costco name tags for all of their friends to wear.

Foto: Costco name tags.sourceCourtesy of Josie Gonzalez

People could fill in their own names.


Guests came prepared with Costco costumes to go with the name tags.

Foto: A guest dressed as a Costco employee.sourceCourtesy of Josie Gonzalez

"They ordered shirts, aprons, hairnets, etc," she said. "They arrived with bottles of Kirkland wine and liquor, someone even brought one of Costco's famous rotisserie chickens."


Snacks were presented as the store's famous samples on red trays, complete with Costco-style signs.

Foto: Party snacks from Costco.sourceCourtesy of Josie Gonzalez

Needless to say, all of the food at the birthday party came from the beloved store.


Even their dog Sampson got a sign of his own.

Foto: The Gonzalez's dog Sampson.sourceCourtesy of Josie Gonzalez

They made him a sign "just for laughs," Gonzalez said.


For more decor, they used bottles from Costco's Kirkland brand as vases.

Foto: Kirkland bottles.sourceCourtesy of Josie Gonzalez

Red and white flowers, of course.


One-year-old Mason was named Employee of the Year.

Foto: Congrats, Mason!sourceCourtesy of Josie Gonzalez

The congratulatory board included a photo from every month of his life.


"We're a Costco family. That's for sure," Gonzalez said.

Foto: Josie Gonzalez and Mason.sourceCourtesy of Josie Gonzalez

"Everything you could possibly need, as well as everything you absolutely don't need, is at Costco," she said. "And if I'm being honest, we buy it all."