You could, theoretically, just add the script twice (or more times) and do these changes to the copy:
Change:
prontera,155,188,4 script Banquet Houseman 109,{
To:
-<tab>script<tab>BH#<tab>-1,{
Where # is the current copy
And make sure that they have different '.map$'.
That should give you two of the same event, sharing queue, without them messing with each other noticeably