It depends on the number of people, I drove twice and only on three slides there is a queue of more than 5 - 15 minutes of waiting, the rest within 5 minutes the queue will reach you it is better to go with a company not big or immediately there to meet compatriots or other guys and for each other to take a queue It is better to book a ticket through some service that is listed in the Google map, you will need a card for payment, but you will save 400 bht per adult compared to paying at the place. (If you book online, you need at least a day in advance at one of the sites)
it is better to go with a company not big or immediately there to meet compatriots or other guys and for each other to take a queue