Participating in merit-making at Tham Sri Wilai Temple can be done in various ways according to your faith, whether through donating for utility bills, contributing to cave restoration, or offering funds for the upkeep of religious structures. Visitors can place their contributions in donation boxes located at various points or contact staff in the pavilion to receive a certificate of appreciation for their auspicious deeds. Sacrificing personal wealth for the public good in this sacred place is considered a form of generosity that helps sustain Buddhism and preserve the magnificent natural beauty of the cave for future generations.