If a guest signs up on the 15th, what will they pay?

In this scenario, when a guest signs up for a tanning service on the 15th, the expectation is that they would pay the full rate. This reflects standard billing practices where customers are charged for the service as soon as they sign up, regardless of whether it is in the middle of a billing cycle or at the end. This full rate policy ensures consistent payment processes and revenue management for the tanning business, as it avoids complications that can arise from prorating fees.

Prorated amounts are generally used when a service is rendered for only part of a billing period, but in this case, since the sign-up occurs on the 15th, it typically aligns with the standard full payment for services to be utilized for that month or period ahead. Promotions or discounts might apply at different times or under specific conditions, but they do not alter the fact that the initial transaction upon sign-up will be at the full rate. Therefore, the reasoning aligns with common practices in service-oriented industries.