9D: Celebrate with bunting (3,3,5,3) P?T ??? F?A?S ??? (I thought it was PUT THE FLAGS OUT but that leaves me with H for the next clue and U for the last so not sure.)
16A: Yellow pigment in the form of fine clay (5) I?H?E
29A: Veritably, indeed (2,2,4) ?O ?E ?U?E (thought maybe to be done?)