Sefton Central Labour MP Bill Esterson has had confirmation from the Maghull Group that parking charges at Central Square will not be 24/7.
Members of the University of the Third Age for Maghull and Lydiate contacted the Labour MP to raise their concerns about the parking charges.
Central Square owners, The Maghull Group, are planning to introduce parking charges in the next few weeks.
But the U3A's Theatre Group regularly park their cars at the Square before travelling to venues by coach for evening theatre trips.
They feared that a 24/7 parking charge would mean that they would have no where to leave their cars, or at least incur large parking charges for an empty car park.
But this week, Bill Esterson got assurances from the Square's owners that the charges would only be for the daytime period.
Bill said: "I spoke to the Maghull Group about some of the concerns which have been raised with me about the charges.
"I am pleased to confirm to U3A that the parking charges will not run through the evening, so their theatre trip arrangements will not be affected."
The MP is also continuing to urge The Maghull Group to extend the planned 30 minute free parking to one hour.
Bill said: "I have discussed parking charges with The Maghull Group and asked them to consider how long parking should be free so that shoppers and traders both benefit.
"Maghull Group is proposing half an hour free parking, then to charge, which is the same as happens in Crosby. But when I visit Crosby, I find that half an hour is not long enough so end up paying for an hour or for longer.
"They tell me that their studies have shown that the majority of shoppers in Central Square are done within 30 minutes.
"But like many residents and like some traders, I am concerned that half-an-hour is not long enough and have asked The Maghull Group to extend that time to one hour so people not only do their shopping, but also enjoy a coffee while they are there.
"They have agreed to have an initial six month review period after which they will access feedback and customer footfall before finalising times."