How to decorate a pavilion without breaking the budget?

Agree that you you don't have to do much here. The wood and the light fixtures are lovely. Maybe an aisle runner and some bows or greenery arrangements on the chairs on the aisle and I think you are good to go. Save the money for the reception.

This is a lovely space! I agree that it doesn't need much. I would wonder about renting an arch or some focal point at the end of the room, do an aisle runner and decorate the chairs on the aisle.

You can buy an arch for a very reasonable price on Amazon, Etsy, etc. or rent one locally. Likewise you can rent trees or plants or plan aisle decor to double as your reception centerpieces. The ceiling is a nice focal point. Once guests are seated I agree with PP that you don't need much. I wouldn't recommend draping.

To decorate a pavilion without breaking the budget for your June wedding, consider alternative and cost-effective decor options. Since drapery and florals are proving to be more expensive than expected, you can explore alternatives such as string lights, paper lanterns, or fairy lights to create a warm and inviting ambiance.

Additionally, DIY projects like handmade centerpieces, table runners, or repurposing thrifted or rented decor items can significantly reduce costs while adding a personal touch to your venue. Embrace the unique aspects of your pavilion and its surroundings by incorporating elements like potted plants, simple fabric swags, or even large photographs or artworks to enhance its charm without exceeding your budget.