Need help with a drag down

Merged cells (column A) often cause havoc with formulas. Generally they should be avoided. Although this one is not so bad.

In the attached there are two solutions. One (column F) uses a helper column (column E) to manage the merged cells. The other (column G) does not.

In column E.

Formula:

=IF(A2="",E1,A2)

In column F.

Formula:

=--(INDEX('Form Responses 1'!$A$2:$H$70,CEILING(ROWS($2:2)/16,1),E2)=

CHOOSE(MOD(ROWS($2:2)-1,2)+1,"1st","2nd")&" Service")

In column G.

Formula:

=--(INDEX('Form Responses 1'!$A$2:$H$70,CEILING(ROWS($2:2)/16,1),LOOKUP(1E+306,$A$2:A2))=

CHOOSE(MOD(ROWS($2:2)-1,2)+1,"1st","2nd")&" Service")