Planning a Wedding? Know How Many Restroom Trailers You’ll Need

A wedding planner and a couple look at dates on a calendar.

If you’re planning a wedding, don’t leave the restroom logistics until the last minute! When nature calls, it’s essential for all of your guests to have somewhere comfortable and clean. That’s why luxury restroom trailers from The Posh Privy are redefining wedding rentals in Sonoma County with elegance, efficiency, and thoughtful design.

Whether you're planning a small vow exchange or a full-scale celebration, here's how to calculate how many restroom trailers you should prepare for your big day.

The Golden Rule: One Stall Per 100 Guests (Minimum)

As a baseline, we recommend one bathroom stall per 100 guests for a typical 4-6 hour wedding. This rule can flex based on alcohol consumption, meal service, or the presence of elderly or disabled guests.

Here's a breakdown by wedding size to help guide your trailer selection.

Small Weddings (Up to 100 Guests)

Estimated Trailer Need: 1 trailer with 2 stalls

For intimate celebrations, a two-stall unit is often perfect. The VIP2 Standard 2-Stall or the LUX2 Luxury 2-Stall trailer are great choices here. The LUX2 offers added sophistication like music, air conditioning, and oversized stalls, great for guests in formal attire.

Recommendations

  • Guest Comfort: Avoid long waits with two private stalls

  • Best Fit: Outdoor elopements, backyard weddings, micro-weddings

  • Add-ons: If your guest list includes elderly attendees or children, consider a unit with an ADA stall like the ADA+2 for added accessibility.

Medium Weddings (100–250 Guests)

Estimated Trailer Need: 1 trailer with 3–4 stalls

This range is where luxury planning becomes essential. A single 3- or 4-stall trailer keeps things classy and convenient without crowding your venue footprint. The LUX3 Luxury 3-Stall, POSH3 Cottage 3-Stall, or LUX4 Luxury 4-Stall trailers all provide enough capacity and elegance for these mid-size affairs.

Recommendations

  • Guest Comfort: Keep wait times under 5 minutes at peak

  • Best Fit: Barn venues, wine estate ceremonies, tented receptions

  • Add-ons: If you’re hosting a longer event (e.g., ceremony + cocktail hour + dinner + dancing), consider a trailer with climate control and upgraded interiors like the LUX4, especially for warm Sonoma days.

Large Weddings (250–500+ Guests)

Estimated Trailer Need: 1–2 trailers with 5–6+ stations

Larger celebrations demand multiple access points or high-capacity units. The POSH6 Cottage 6-Stall or the LUX5 Luxury 5-Stall trailers offer upscale accommodations for guest lists of 300–550. These trailers come equipped with multiple suites, climate control, backlit mirrors, and charming exterior décor that blends into your theme.

Depending on your event layout and the flow of the day, you might consider two smaller trailers placed at different ends of the venue. This helps with congestion and ensures guests are never too far from facilities.

Recommendations

  • Guest Comfort: Continuous accessibility without lines

  • Best Fit: Full-service vineyard weddings, large tented events, multi-day celebrations

  • Add-ons: Mix and match trailer types, pair a large POSH6 near the reception tent with a LUX2 closer to the ceremony lawn.

Don’t Forget Duration, Layout & Drinks

Besides guest count, consider:

  • Event Duration: Longer events = more bathroom traffic

  • Alcohol: Increases frequency of use

  • Venue Layout: Spread out events need multiple trailer locations

  • Guest Demographics: Elderly guests, families with young children, or guests with mobility needs may require special accommodations

Why Sonoma County Couples Choose The Posh Privy

From the Cottage-style POSH6 with charming flower boxes to the understated elegance of our LUX series, The Posh Privy has trailers are designed to match your wedding aesthetic, not clash with it.

And because we’re based right here in Santa Rosa, our team understands the flow of Wine Country weddings. We’ll help with logistics, placement, servicing, and even décor integration, so your bathrooms are part of the guest experience, not an afterthought.

The Bottom Line: Start With Your Guest List

To simplify your planning, here’s a quick chart:

Guest Count Recommended Trailer(s) Stall Count Examples
Up to 100 LUX2, VIP2
2
Elopements, backyard weddings
100–250 POSH3, LUX3, LUX4
3–4
Estate, barn, or winery weddings
250–400 LUX5, LUX4 + VIP2 combo
5–6
Large tented weddings
400–550 POSH6 or POSH6 + LUX2
6+
Grand wine country celebrations


Let’s Make Your Wedding Seamless – The Posh Privy

Still unsure how many trailers you need? That’s what we’re here for. Our team can walk your venue, discuss your layout, and suggest the ideal setup, based on real event expertise, not guesswork.

Contact The Posh Privy online today or give us a call at (707)395-7674 for a custom quote on wedding rentals in Sonoma County. Whether it’s one LUX trailer or a coordinated fleet, we’ll help ensure your celebration flows effortlessly, indoors and out.

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