Practice ILS
Quite often we accept training flights only for the TWR to impose a go around not below 400 feet because the runway is occupied.
Is this a problem for you? Would you rather complete the approach to minimums or are you happy just to track the LLZ/GS?
I personally think it a bit inconsiderate to accept such flights then be told you cannot complete the exercise!
PS I work approach for two airports. The one in question is located in Class G!