An oracle with the time mystery can choose the Temporal Celerity revelation:
Temporal Celerity (Su): Whenever you roll for initiative, you can roll twice and take either result. At 7th level, you can always act in the surprise round, but if you fail to notice the ambush, you act last, regardless of your initiative result (you act in the normal order in following rounds). At 11th level, you can roll for initiative three times and take any one of the results.
What happens if the party enters a combat when there otherwise wouldn't be a surprise round? Does this effect trigger or no?