For most weddings, plan on 1 portable toilet for every 25 guests, and choose deluxe flushing units or luxury washroom trailers for the best guest experience. A 100-person wedding needs 4 units minimum, and a 150-person wedding needs 6. Here is how to fine-tune that number for your specific celebration.

The Basic Formula

The event industry standard for weddings is more generous than for general events because weddings run longer, guests consume more beverages, and the overall experience matters. Start with this baseline:

1 unit per 25 guests for a wedding lasting 4 to 6 hours
Add 1 extra unit for every additional 2 hours beyond 6 hours
Add 1 extra unit if you are serving an open bar (alcohol increases usage by roughly 30 percent)

For a typical 120-guest wedding with a 5-hour reception and open bar, you would need 5 to 6 units.

Which Unit Type for a Wedding?

Standard construction-site portable toilets are not the right choice for a wedding. Your guests will notice, and not in a good way. Here are the options that work:

Deluxe Flushing Units

These are the most popular choice for weddings. They feature a flushing toilet, hand wash sink with running water, a mirror, and a more finished interior. Deluxe units rent for approximately $230 per month in the Okanagan and provide a comfortable experience without breaking the budget.

Luxury Washroom Trailers

For couples who want the best possible experience, luxury washroom trailers offer multiple stalls, running water, climate control, lighting, and premium finishes. One trailer can often replace 3 to 4 individual units and provides a much more refined atmosphere. Contact Action Septic for trailer pricing.

ADA Accessible Units

If any of your guests use a wheelchair or have mobility challenges, include at least one ADA-accessible unit. This is both thoughtful and often required for event permits. ADA units rent for approximately $230 per month.

Factors That Affect How Many You Need

Beyond the basic formula, consider these variables:

Event duration: A ceremony-only event (1 to 2 hours) needs fewer units than a full-day celebration with a ceremony, cocktail hour, dinner, and dancing.

Alcohol service: Open bars and wine-heavy receptions increase bathroom usage significantly. Add at least 1 extra unit beyond the baseline formula.

Guest demographics: Events with more women or older guests typically see higher bathroom usage. Adjust upward if your guest list skews in either direction.

Venue facilities: Some outdoor venues have limited indoor facilities. If the venue has 1 or 2 indoor restrooms, you may be able to reduce the portable toilet count slightly, but do not rely entirely on indoor facilities for large guest counts.

Vendor and staff needs: Do not forget that your caterer, DJ, photographer, and other vendors will also need access to restrooms. Factor in an additional unit if you have a large vendor team.

Placement Tips for Wedding Portable Toilets

Where you place the units matters as much as how many you rent. Keep these guidelines in mind:

Place units 50 to 100 feet from the reception area, close enough for convenience but far enough to keep odors away from dining and dancing areas
Position units on level ground with a clear path that works for guests in heels or dress shoes
Consider lighting along the path to the units, especially for evening receptions
Group units together so guests can find them easily, and consider signage or decorative elements to make them part of the event aesthetic
Place at least one unit near the wedding party staging area for the bridal party and vendors

When to Book for Your Wedding

Okanagan wedding season runs from May through September, and popular weekends book up fast. Reserve your portable toilets at least 6 to 8 weeks before your wedding date. If your wedding falls on a long weekend or during peak season (July and August), book even earlier.

What Servicing Is Included?

Action Septic includes servicing with all wedding rentals. For multi-day events, we provide mid-event servicing to keep units fresh and fully stocked. For single-day weddings, units arrive clean, sanitized, and fully stocked on the morning of your event.

Planning an outdoor wedding in the Okanagan? Call Action Septic at 250-808-7867 for a quote tailored to your guest count, venue, and unit preferences. We have been helping Okanagan couples plan comfortable outdoor celebrations for over 28 years.

How Many Portable Toilets Do You Need for a Wedding?