1. Comparative structure: "more convenient" is used to compare the ease of using travel agencies versus planning independently, showing the ability to use comparative forms naturally.
2. Infinitive of purpose: "to have professionals arrange everything" uses the infinitive to explain the reason for choosing travel agencies, which is a common and effective structure in spoken English.
3. Present simple tense: The answer uses the present simple tense throughout ("prefer," "find," "reduces," "ensures"), which is appropriate for describing general habits and facts.
4. Passive voice: "all the details are taken care of" uses the passive voice to emphasize the result rather than who is doing the action, which adds variety and sophistication to the grammar.