amenities

I use them.

私は利用します

I use them during the trip.

私は旅行中に利用します

I use them with my family during the trip.

私は旅行中に家族と利用します

I use the amenities inside the hotel with my family during the trip.

私は旅行中に家族と宿泊施設内の便益施設を利用します

I use the amenities inside the hotel with my family whenever we need them during the trip.

私は旅行中に家族と宿泊施設内の便益施設を必要なときに利用します