"I have known Dennis Speigel for many enjoyable years. Further, I can attest to both his personal character and the outstanding reputation of his company. I personally, as well as the Six Flags Corporation, have worked with Dennis and his staff. I would not hesitate in offering my recommendations for use of ITPS on any leisure project."
"I have known and been associated with Dennis Speigel for over 30 years. During this period of time, I have found Dennis to be one of the most creative and conscientious individuals with whom I have had the pleasure of working."
"International Theme Park Services is a very credible company and very knowledgeable in theme park development. I recommend him highly."
“At Hersheypark, our systems, procedures, and teams are audited on a regular basis as the safety and security of our guests and employees is paramount. In our long-standing experience, International Theme Park Services conducts effective and comprehensive audits. Their organization takes its time to thoroughly understand our operation on multiple levels to performing the audit. With years of industry experience, we have found International Theme Park Services to be easy with which to work in coordinating efforts, and the staff is friendly and helpful.”
"International Theme Park Services, Inc. has consulted on various aspects of our theme park at Worlds of Fun. We have always found Dennis Speigel, president, and his staff to be competent in their analysis, making very solid and meaningful recommendations to our corporation."
"International Theme Park Services is a multi-faceted company. Their work can be seen on almost every continent and the reputation of the firm is very high. Mr. Speigel is held in considerable esteem by his peers."
On behalf of the owners, management and staff of Reino-Aventura, I want to compliment and thank International Theme Park Services for preparing and conducting the Reino-Aventura training program."
"The program established by ITPS was very organized and extremely beneficial to the participants and our park. Our people came back to Mexico full of knowledge."
"Thank you so much for the theme park/recreational/leisure project feasibility analysis. Your work was not only of the highest quality but also displayed a most professional and positive attitude since our Lotte World Theme Park early project time and during up to date of operations."
All of us here at Six Flags Theme Parks want to say "thanks" for all the time you and your company, International Theme Park Services, have given to this industry."
"You have been a driving force in the development of theme parks, in the operating of theme parks, and a help in guiding the International Association of Amusement Parks to a much bigger and better organization."
"We have utilized the services of ITPS extensively during the last five years and find them to be the most professional consulting company in the industry."