To walk about is bliss (8)
I believe the answer is:
paradise
'bliss' is the definition.
(I've seen this before)
'to walk about is' is the wordplay.
'to walk' becomes 'parade' (parading is a kind of walking).
'about' indicates putting letters inside.
'parade' enclosing 'is' is 'PARADISE'.
(Other definitions for paradise that I've seen before include "heavenly destination" , "What was lost to the poet" , "a state of bliss" , "perfectly happy state" , "Heaven, nirvana, Valhalla etc" .)