TOPIC: available # of spots on group # page AND checkbox spacing

1) I need to know how to to have the Number of Available tickets displayed on the Enter Number of Registrants page,

2) I need to adjust the spacing between the options in radio and checkbox fields. I need the list to be more accessible for Visually Impaired.

3) is it possible to have radio button fields not require a default likeDtDonate?

Please tell me how & where to implement these.

Thanks
P.S. can't we please find a way to integrate DTdonate into registration so we can have a user defined amount for some fields?