Changes have been made to the system allowing autistic children to enjoy the rides at Legoland without queueing.
But they have not gone down well with some parents.
A system of tokens introduced in 2016 allowed children with a medical condition that made queueing difficult to get onto rides as quickly as possible. But as the popularity of the scheme grew, queues of people with tokens were soon becoming as long as the ordinary queues.
Now the famous theme park in Winkfield Road, Windsor has come up with a new plan, allowing customers to use a smart phone to book a place on the ride of their choice at a specific time of the day.
But response on the social media has not been encouraging.
One parent posted that the change had made things harder.
The post reads: "Having to select what you want to do more than an hour in advance, stick to that and then still wait anything up to 30 minutes to get on the ride is not good for an autistic person who can't queue and has the pass for that reason. Might work ok for those that are interested in other aspects of the park but if you aren't, it doesn't work well."
The parent says that having to fill in time while waiting for a time slot ends up costing a lot of money as families listlessly 'fill in the gap'.
Another social media commentator said that queues of people booked for a ride at a specific time were turning out to be longer than they used to be under the old system.
A spokesman for Legoland said: "We will be closely monitoring feedback on the new system throughout the season including asking all Ride Access Pass users to complete an online survey. We will review this in detail and use it to develop our Ride Access Pass system for 2018."