DS (18 months) and DD (21 months) both have sensory processing disorder due to prenatal drug use (both adopted at birth). DH and I are concerned that DD will not be able to tolerate the lines and general claustraphobic feeling as just going through the clothing racks at the store trigger a meltdown. DS is much more managable but also has his moments. 
If you are not familiar with sensory processing disorder please do not chime in with a lecture on typical toddler behavior or other opinions.
We have heard that there is a guest services card that will allow us to forgo the lines if needed. We plan to not use it unless it is absolutely necessary. Does anyone have any experience with this service? Is all that is required a note from doctors/therapists stating that they do have SPD?

If you are not familiar with sensory processing disorder please do not chime in with a lecture on typical toddler behavior or other opinions.
We have heard that there is a guest services card that will allow us to forgo the lines if needed. We plan to not use it unless it is absolutely necessary. Does anyone have any experience with this service? Is all that is required a note from doctors/therapists stating that they do have SPD?