It is not obligatory to open the Radome in order to use the lift, but if you don't open it you have to be very careful about the position of the plane and in the end it can take longer than opening it.
So we open it in good weather and leave it closed in bad weather.
The opening and closing is designed to be fast, less than 5 minutes in total, and it can be done at the same time as you fix the weapons under the wings.
Likewise the assembly and disassembly of the wingtips, which is similar to the assembly and disassembly of the pylons under the wings, can be done in hidden time.