Several disabled pilgrims have returned their passes worried over access and the 2am start time to begin the journey to Birmingham for the Mass at 10am.
Pope Benedict XVI will give an open-air Mass in Cofton Park on Sunday 19 September in front on 70,000 people.
The service will also include the beatification of Cardinal John Newman.
Dedicated wheelchair pathway
Speaking to BBC WM's Breakfast show, the Papal co-ordinator for the Archdiocese of Birmingham, Canon Patrick Browne, said all disabled pilgrims will be given the necessary care and attention.
"There is a pathway that will lead from the coach park which is about 500 yards from the entrance to the park.
"There is a dedicated wheelchair area and the path is suitable for pushing wheelchairs.
"If the wheelchair uses have any special medical needs they need to inform their local pilgrim leader and they will deal with it."
On the issue of the starting time for the pilgrim trail, Canon Browne added:
"Depending on where they live, they will be leaving very early in the morning - anything from 2 to 3 in the morning - to arrive at the coach park at 6am."
Possible Popemobile tour
The Archdiocese of Birmingham press secretary Peter Jennings confirmed that a number of parishioners are returning their tickets.
"A few are. It is difficult for older folk but huge numbers of people are asking for pilgrim invitations," Mr Jennings said.
"There are two weeks to go and everyone's on track."
Discussions are still on-going over whether the Pope will tour the streets of Birmingham in the Popemobile.
"It's not really in the hands of the church but we're really hoping the Popemobile will be used in Birmingham at some stage," added Mr Jennings.
SIC: BBC/UK