Do advertising companies have to pay to enter the hotel?

Generally, it is not necessary. You can communicate with the hotel.

This question needs to ask about the hotel you booked. Some hotels charge admission fees, such as busy business and queuing for banquets. Especially if you need to advertise in the hotel, you need to pay the entrance fee.

Admission fee (also called admission fee) is a kind of fee charged by hotels, shopping malls and supermarkets by taking advantage of their comparative advantages in market transactions.