Hello.

I help increase sales through customer success.

The answer should relate to your business strategy and business objective of this campaign.

The first option is engaging and ideating while the second is asking for a trial. The first is at no cost while the second is purchase dependent.

If the travel package is innovative and new or launch then engagement is worthy objective too. If it is more in vogue then generating sales is more worthy.

It also depends upon what you define as return - is it engagement or is it purchase. Both can be legit objectives depending upon your business strategy, competition, and campaign objective.

My sense is to define your campaign objective, then re-define more cogent options, and then validate with your customers.

If it is a small campaign you can talk to a few prospects or customers on their preferences and take a more informed decision. If it is a large budget campaign then a proper A/B testing is better for the hypotheses.

I would be more comfortable making a recommendation here after following the thought process outlines above.

Hope this helps.

All the best.