
Seattle’s Premier Wedding Mobile Bar by Otter on the Rocks
Crafted to Celebrate.
Poured to Remember.

Welcome to your crafted-to-celebrate experience.
Otter Proof is Seattle’s premier wedding mobile bar, bringing craft cocktails, elevated service, and fully licensed bar setups to weddings and events across Western Washington. Backed by Otter on the Rocks, our award-winning cocktail bar, we offer a one-of-a-kind experience couples can’t find anywhere else from custom seasonal menus to licensed bartenders and handcrafted bar setups. We handle it with creativity, care, and genuine hospitality — all tailored to your celebration, your story, and your taste.

Our Mission
We bring the bar—so you can bring the party! Our mission is to make your big day feel personal and seamless by serving drinks that reflect you. From customized cocktails and thoughtful presentation to warm, attentive service, everything is tailored with love and care.

Otter Proof x Otter on the Rocks
From our bar to your big day! Otter Proof is the event bar extension of Otter on the Rocks — our award-winning West Seattle cocktail bar, known for seasonal menus, intentional cocktails, and heartfelt hospitality. Voted Best Cocktails in the 2024 Best in the Pacific Northwest by the Seattle Times, we’re bringing the same creativity and care to your wedding — one memorable drink at a time.
Why Choose Our Wedding Bar in Seattle
We’re not just bartenders — we’re your cocktail concierge. From the first pour to the final toast, we handle every detail so you don’t have to.

Bar Setup, Staffing, and Full-Service Support
We’re a true one-stop shop. That means we handle the alcohol, liability insurance, garnishes, ice, drinkware, compostables — the whole bar experience, top to bottom. You get to relax and celebrate while we take care of every last detail.

Craft Cocktails, Not Just “Open Bar”
Backed by our award-winning craft cocktail bar Otter on the Rocks, you’re getting top-tier drinks, not just someone who knows how to pour.

Personalized Cocktail Planning
Your menu is built just for you during a private consultation — tailored to your style, theme, and vibe.

Custom Mobile Bar Setup for Weddings
A hand-built wooden bar with a white top brings a polished focal point to your celebration at any venue — tools and setup included.

Scratch-Made Ingredients, Always
Your cocktails are made with fresh-pressed juices, scratch-made syrups, and house infusions. It’s the same level of care we bring to our in-house menu — every pour is crafted with intention and flavor.

Inclusive Hospitality for Everyone
We believe everyone deserves a great drink. That’s why every package includes a delicious zero-proof punch — not just an afterthought, but something everyone at the party can enjoy. We’ve got your whole guest list covered.
We’re here to make things easy, personal, and genuinely special. From thoughtful service to drinks that reflect you, we’ll help create a bar experience that feels just right for your day — relaxed, memorable, and full of heart.
For Planners & Venues
We work directly with couples, wedding planners, and venues to deliver seamless, professional bar service that elevates any celebration. Whether you’re planning an intimate backyard gathering or a 200-person wedding, we’ll bring a tailored bar experience — stress-free and fully licensed.