sorry if the title is not clear but my guestion(s) for all.......

how many pax can be on 1 pnr?

is there a limit as to how many fare re-price certs (travel credit "type b vouchers") can be applied to an individual ticket?

i have 2 $150 customer realtions travel certs (pw150) which are not combinable with eachother but can the re-pricing travel certs from above be added on top of this typr of cert? (my take is yes as the refund certs are $$).

the reason for my asking is that i'm in the process of planning a family trip (sfo-las) as the "cuzzinz" from paris are coming next summer and it's now my turn to spoil them as my money is no good when i visit them.

my plan is:

use credits trom the rtw promo for 3 free regional tx
apply the 2 $150 certs towards 2 additional tix
purchase 3 more tix
use the refund credits (approx $500) to reduice the prices even more
keep it all under one pnr under my status

hope i 'splained it all correclty and thanks (as always ^ ) for the great advice!