My IRT was from Bournemouth to Cardiff for radar vectored ILS and then back to Bournemouth for the procedural stuff. Cardiff had a 737 approaching for the ILS at the time and wanted to vector me in as tight as possible to get me in and out quickly before the 737 arrived. Keen to be as 'commercial' as possible and avoid lengthy vectors or holding I accepted. Worked out fine in the end but I had to do some fast thinking to work out how to manage the descent from that point onwards and not mess it up.
Conclusion - as the others have said, be prepared for what may be thrown at you on the way and have contingencies available.