Key Tasks for Usability+Marketing for Website Services?

Question

contextual advertising

Good afternoon! Got a new website to promote. The essence of the project is the sale of travel services (tours, excursions
, etc.)
G, let's do everything first"
Therefore, questions for experienced promoters and usability experts:
On Usability:
-What functionality would be useful for you in the first place if you went to a site that sells tourism services (except for booking hotels)
On Marketing:
- What channel, and maybe even a kind of channel for promotion, did you use in the first place?
PS I do not need a complete list with specific details - I have already done the analytics. The question is, what would you do first of all with improvements?

Answer 1

1) convenient
2) with maximum ROI

Answer 2

I think the main thing is a convenient search, namely:
1) Divide into Countries with filters such as type of food, city, etc.
2) Break down by type of holiday - extreme tourism, cruises, etc.
3) Availability of online assistant and callback