[GUESTCUSTOMQ1] - answer to custom question 1
[GUESTCUSTOMQ1BR] - answer to custom question 1 with line breaks <BR>
[GUESTCUSTOMQ2] - answer to custom question 2
[GUESTCUSTOMQsBR] - answer to custom question 2 with line breaks <BR>
[GUESTCUSTOMQ3] - answer to custom question 3
[GUESTCUSTOMQ3BR] - answer to custom question 3 with line breaks <BR>
[GUESTCUSTOMQ4] - answer to custom question 4
[GUESTCUSTOMQ4BR] - answer to custom question 4 with line breaks <BR>
[GUESTCUSTOMQ5] - answer to custom question 5
[GUESTCUSTOMQ5BR] - answer to custom question 5 with line breaks <BR>
[GUESTCUSTOMQ6] - answer to custom question 6
[GUESTCUSTOMQ6BR] - answer to custom question 6 with line breaks <BR>
[GUESTCUSTOMQ7] - answer to custom question 7
[GUESTCUSTOMQ7BR] - answer to custom question 7 with line breaks <BR>
[GUESTCUSTOMQ8] - answer to custom question 8
[GUESTCUSTOMQ8BR] - answer to custom question 8 with line breaks <BR>
[GUESTCUSTOMQ9] - answer to custom question 9
[GUESTCUSTOMQ9BR] - answer to custom question 9 with line breaks <BR>
[GUESTCUSTOMQ10] - answer to custom question 10
[GUESTCUSTOMQ10BR] - answer to custom question 10 with line breaks <BR>
[REFERENCE] - content of the booking reference field